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Finding the Fourth Proportional to 9,267.43, 12,785.88 and 5,285.68

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Solution

The fourth proportional to 9,267.43, 12,785.88 and 5,285.68 is: 7,292.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,267.43 : 12,785.88 = 5,285.68 : x
  2. Step 2: Convert to fraction form
    9,267.43/12,785.88 = 5,285.68/x
  3. Step 3: Cross multiply
    9,267.43x = 12,785.88 × 5,285.68
  4. Step 4: Simplify right side
    9,267.43x = 67,582,070.20
  5. Step 5: Solve for x
    x = 67,582,070.20/9,267.43
  6. Step 6: Final answer
    x = 7,292.43

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.