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Finding the Fourth Proportional to 9,337.65, 12,885.71 and 5,145.63

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Solution

The fourth proportional to 9,337.65, 12,885.71 and 5,145.63 is: 7,100.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,337.65 : 12,885.71 = 5,145.63 : x
  2. Step 2: Convert to fraction form
    9,337.65/12,885.71 = 5,145.63/x
  3. Step 3: Cross multiply
    9,337.65x = 12,885.71 × 5,145.63
  4. Step 4: Simplify right side
    9,337.65x = 66,305,095.95
  5. Step 5: Solve for x
    x = 66,305,095.95/9,337.65
  6. Step 6: Final answer
    x = 7,100.83

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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.