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Finding the Fourth Proportional to 8,986.71, 13,463.64 and 6,515.40

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Solution

The fourth proportional to 8,986.71, 13,463.64 and 6,515.40 is: 9,761.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,986.71 : 13,463.64 = 6,515.40 : x
  2. Step 2: Convert to fraction form
    8,986.71/13,463.64 = 6,515.40/x
  3. Step 3: Cross multiply
    8,986.71x = 13,463.64 × 6,515.40
  4. Step 4: Simplify right side
    8,986.71x = 87,721,000.06
  5. Step 5: Solve for x
    x = 87,721,000.06/8,986.71
  6. Step 6: Final answer
    x = 9,761.19

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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.