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Finding the Fourth Proportional to 2,863.91, 4,295.95 and 916.12

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Solution

The fourth proportional to 2,863.91, 4,295.95 and 916.12 is: 1,374.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,863.91 : 4,295.95 = 916.12 : x
  2. Step 2: Convert to fraction form
    2,863.91/4,295.95 = 916.12/x
  3. Step 3: Cross multiply
    2,863.91x = 4,295.95 × 916.12
  4. Step 4: Simplify right side
    2,863.91x = 3,935,592.68
  5. Step 5: Solve for x
    x = 3,935,592.68/2,863.91
  6. Step 6: Final answer
    x = 1,374.20

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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.