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Finding the Fourth Proportional to 7,077.92, 10,616.90 and 2,916.88

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Solution

The fourth proportional to 7,077.92, 10,616.90 and 2,916.88 is: 4,375.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,077.92 : 10,616.90 = 2,916.88 : x
  2. Step 2: Convert to fraction form
    7,077.92/10,616.90 = 2,916.88/x
  3. Step 3: Cross multiply
    7,077.92x = 10,616.90 × 2,916.88
  4. Step 4: Simplify right side
    7,077.92x = 30,968,223.27
  5. Step 5: Solve for x
    x = 30,968,223.27/7,077.92
  6. Step 6: Final answer
    x = 4,375.33

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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.