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Finding the Fourth Proportional to 8,711.40, 13,083.90 and 7,464.81

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Solution

The fourth proportional to 8,711.40, 13,083.90 and 7,464.81 is: 11,211.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,711.40 : 13,083.90 = 7,464.81 : x
  2. Step 2: Convert to fraction form
    8,711.40/13,083.90 = 7,464.81/x
  3. Step 3: Cross multiply
    8,711.40x = 13,083.90 × 7,464.81
  4. Step 4: Simplify right side
    8,711.40x = 97,668,827.56
  5. Step 5: Solve for x
    x = 97,668,827.56/8,711.40
  6. Step 6: Final answer
    x = 11,211.61

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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.