Home / 7,243.20-9,995.79-4,259.19

Finding the Fourth Proportional to 7,243.20, 9,995.79 and 4,259.19

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Solution

The fourth proportional to 7,243.20, 9,995.79 and 4,259.19 is: 5,877.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,243.20 : 9,995.79 = 4,259.19 : x
  2. Step 2: Convert to fraction form
    7,243.20/9,995.79 = 4,259.19/x
  3. Step 3: Cross multiply
    7,243.20x = 9,995.79 × 4,259.19
  4. Step 4: Simplify right side
    7,243.20x = 42,573,968.81
  5. Step 5: Solve for x
    x = 42,573,968.81/7,243.20
  6. Step 6: Final answer
    x = 5,877.78

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Half scale
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Double scale
Find fourth proportional to 7,244.20, 9,997.17 and 4,260.19
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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.