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Finding the Fourth Proportional to 7,891.52, 11,854.47 and 4,772.99

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Solution

The fourth proportional to 7,891.52, 11,854.47 and 4,772.99 is: 7,169.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,891.52 : 11,854.47 = 4,772.99 : x
  2. Step 2: Convert to fraction form
    7,891.52/11,854.47 = 4,772.99/x
  3. Step 3: Cross multiply
    7,891.52x = 11,854.47 × 4,772.99
  4. Step 4: Simplify right side
    7,891.52x = 56,581,266.77
  5. Step 5: Solve for x
    x = 56,581,266.77/7,891.52
  6. Step 6: Final answer
    x = 7,169.88

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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.