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Finding the Fourth Proportional to 5,011.92, 6,916.89 and 2,915.64

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Solution

The fourth proportional to 5,011.92, 6,916.89 and 2,915.64 is: 4,023.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,011.92 : 6,916.89 = 2,915.64 : x
  2. Step 2: Convert to fraction form
    5,011.92/6,916.89 = 2,915.64/x
  3. Step 3: Cross multiply
    5,011.92x = 6,916.89 × 2,915.64
  4. Step 4: Simplify right side
    5,011.92x = 20,167,161.16
  5. Step 5: Solve for x
    x = 20,167,161.16/5,011.92
  6. Step 6: Final answer
    x = 4,023.84

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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.