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Finding the Fourth Proportional to 7,841.44, 10,845.21 and 7,710.22

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Solution

The fourth proportional to 7,841.44, 10,845.21 and 7,710.22 is: 10,663.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,841.44 : 10,845.21 = 7,710.22 : x
  2. Step 2: Convert to fraction form
    7,841.44/10,845.21 = 7,710.22/x
  3. Step 3: Cross multiply
    7,841.44x = 10,845.21 × 7,710.22
  4. Step 4: Simplify right side
    7,841.44x = 83,618,955.05
  5. Step 5: Solve for x
    x = 83,618,955.05/7,841.44
  6. Step 6: Final answer
    x = 10,663.72

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Half scale
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Double scale
Find fourth proportional to 7,842.44, 10,846.59 and 7,711.22
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.