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Finding the Fourth Proportional to 9,134.22, 12,605.18 and 5,156.63

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Solution

The fourth proportional to 9,134.22, 12,605.18 and 5,156.63 is: 7,116.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,134.22 : 12,605.18 = 5,156.63 : x
  2. Step 2: Convert to fraction form
    9,134.22/12,605.18 = 5,156.63/x
  3. Step 3: Cross multiply
    9,134.22x = 12,605.18 × 5,156.63
  4. Step 4: Simplify right side
    9,134.22x = 65,000,160.53
  5. Step 5: Solve for x
    x = 65,000,160.53/9,134.22
  6. Step 6: Final answer
    x = 7,116.12

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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.