Home / 3,158.30-4,737.51-1,078.78

Finding the Fourth Proportional to 3,158.30, 4,737.51 and 1,078.78

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Solution

The fourth proportional to 3,158.30, 4,737.51 and 1,078.78 is: 1,618.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,158.30 : 4,737.51 = 1,078.78 : x
  2. Step 2: Convert to fraction form
    3,158.30/4,737.51 = 1,078.78/x
  3. Step 3: Cross multiply
    3,158.30x = 4,737.51 × 1,078.78
  4. Step 4: Simplify right side
    3,158.30x = 5,110,731.04
  5. Step 5: Solve for x
    x = 5,110,731.04/3,158.30
  6. Step 6: Final answer
    x = 1,618.19

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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.