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Finding the Fourth Proportional to 8,957, 12,357.02 and 5,179.44

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Solution

The fourth proportional to 8,957, 12,357.02 and 5,179.44 is: 7,145.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,957 : 12,357.02 = 5,179.44 : x
  2. Step 2: Convert to fraction form
    8,957/12,357.02 = 5,179.44/x
  3. Step 3: Cross multiply
    8,957x = 12,357.02 × 5,179.44
  4. Step 4: Simplify right side
    8,957x = 64,002,443.67
  5. Step 5: Solve for x
    x = 64,002,443.67/8,957
  6. Step 6: Final answer
    x = 7,145.52

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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.