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Finding the Fourth Proportional to 3,956.61, 5,922.05 and 2,916.20

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Solution

The fourth proportional to 3,956.61, 5,922.05 and 2,916.20 is: 4,364.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,956.61 : 5,922.05 = 2,916.20 : x
  2. Step 2: Convert to fraction form
    3,956.61/5,922.05 = 2,916.20/x
  3. Step 3: Cross multiply
    3,956.61x = 5,922.05 × 2,916.20
  4. Step 4: Simplify right side
    3,956.61x = 17,269,882.21
  5. Step 5: Solve for x
    x = 17,269,882.21/3,956.61
  6. Step 6: Final answer
    x = 4,364.82

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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.