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Finding the Fourth Proportional to 9,348.67, 12,900.63 and 5,156.92

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Solution

The fourth proportional to 9,348.67, 12,900.63 and 5,156.92 is: 7,116.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,348.67 : 12,900.63 = 5,156.92 : x
  2. Step 2: Convert to fraction form
    9,348.67/12,900.63 = 5,156.92/x
  3. Step 3: Cross multiply
    9,348.67x = 12,900.63 × 5,156.92
  4. Step 4: Simplify right side
    9,348.67x = 66,527,516.86
  5. Step 5: Solve for x
    x = 66,527,516.86/9,348.67
  6. Step 6: Final answer
    x = 7,116.25

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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.