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Finding the Fourth Proportional to 8,465.90, 12,711.18 and 6,251.57

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Solution

The fourth proportional to 8,465.90, 12,711.18 and 6,251.57 is: 9,386.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,465.90 : 12,711.18 = 6,251.57 : x
  2. Step 2: Convert to fraction form
    8,465.90/12,711.18 = 6,251.57/x
  3. Step 3: Cross multiply
    8,465.90x = 12,711.18 × 6,251.57
  4. Step 4: Simplify right side
    8,465.90x = 79,464,768.00
  5. Step 5: Solve for x
    x = 79,464,768.00/8,465.90
  6. Step 6: Final answer
    x = 9,386.45

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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.