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Finding the Fourth Proportional to 8,757.64, 13,116.30 and 5,287.24

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Solution

The fourth proportional to 8,757.64, 13,116.30 and 5,287.24 is: 7,918.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,757.64 : 13,116.30 = 5,287.24 : x
  2. Step 2: Convert to fraction form
    8,757.64/13,116.30 = 5,287.24/x
  3. Step 3: Cross multiply
    8,757.64x = 13,116.30 × 5,287.24
  4. Step 4: Simplify right side
    8,757.64x = 69,349,026.01
  5. Step 5: Solve for x
    x = 69,349,026.01/8,757.64
  6. Step 6: Final answer
    x = 7,918.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.