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Finding the Fourth Proportional to 7,126.78, 10,689.16 and 2,446.71

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Solution

The fourth proportional to 7,126.78, 10,689.16 and 2,446.71 is: 3,669.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,126.78 : 10,689.16 = 2,446.71 : x
  2. Step 2: Convert to fraction form
    7,126.78/10,689.16 = 2,446.71/x
  3. Step 3: Cross multiply
    7,126.78x = 10,689.16 × 2,446.71
  4. Step 4: Simplify right side
    7,126.78x = 26,153,274.66
  5. Step 5: Solve for x
    x = 26,153,274.66/7,126.78
  6. Step 6: Final answer
    x = 3,669.72

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Double scale
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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.