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Finding the Fourth Proportional to 6,243.32, 8,615.12 and 3,591.12

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Solution

The fourth proportional to 6,243.32, 8,615.12 and 3,591.12 is: 4,955.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,243.32 : 8,615.12 = 3,591.12 : x
  2. Step 2: Convert to fraction form
    6,243.32/8,615.12 = 3,591.12/x
  3. Step 3: Cross multiply
    6,243.32x = 8,615.12 × 3,591.12
  4. Step 4: Simplify right side
    6,243.32x = 30,937,929.73
  5. Step 5: Solve for x
    x = 30,937,929.73/6,243.32
  6. Step 6: Final answer
    x = 4,955.37

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Half scale
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Double scale
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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.