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Finding the Fourth Proportional to 12,957.75, 19,437.72 and 3,723.75

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Solution

The fourth proportional to 12,957.75, 19,437.72 and 3,723.75 is: 5,585.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,957.75 : 19,437.72 = 3,723.75 : x
  2. Step 2: Convert to fraction form
    12,957.75/19,437.72 = 3,723.75/x
  3. Step 3: Cross multiply
    12,957.75x = 19,437.72 × 3,723.75
  4. Step 4: Simplify right side
    12,957.75x = 72,381,209.85
  5. Step 5: Solve for x
    x = 72,381,209.85/12,957.75
  6. Step 6: Final answer
    x = 5,585.94

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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.