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Finding the Fourth Proportional to 2,916.76, 4,372.70 and 1,453.90

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Solution

The fourth proportional to 2,916.76, 4,372.70 and 1,453.90 is: 2,179.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,916.76 : 4,372.70 = 1,453.90 : x
  2. Step 2: Convert to fraction form
    2,916.76/4,372.70 = 1,453.90/x
  3. Step 3: Cross multiply
    2,916.76x = 4,372.70 × 1,453.90
  4. Step 4: Simplify right side
    2,916.76x = 6,357,468.53
  5. Step 5: Solve for x
    x = 6,357,468.53/2,916.76
  6. Step 6: Final answer
    x = 2,179.63

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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.