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Finding the Fourth Proportional to 9,266.52, 12,787.80 and 5,287.56

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Solution

The fourth proportional to 9,266.52, 12,787.80 and 5,287.56 is: 7,296.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,266.52 : 12,787.80 = 5,287.56 : x
  2. Step 2: Convert to fraction form
    9,266.52/12,787.80 = 5,287.56/x
  3. Step 3: Cross multiply
    9,266.52x = 12,787.80 × 5,287.56
  4. Step 4: Simplify right side
    9,266.52x = 67,616,259.77
  5. Step 5: Solve for x
    x = 67,616,259.77/9,266.52
  6. Step 6: Final answer
    x = 7,296.83

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1.5x scale

Why These Related Problems?

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