Home / 2,789.10-4,176.90-1,487.70

Finding the Fourth Proportional to 2,789.10, 4,176.90 and 1,487.70

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Solution

The fourth proportional to 2,789.10, 4,176.90 and 1,487.70 is: 2,227.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789.10 : 4,176.90 = 1,487.70 : x
  2. Step 2: Convert to fraction form
    2,789.10/4,176.90 = 1,487.70/x
  3. Step 3: Cross multiply
    2,789.10x = 4,176.90 × 1,487.70
  4. Step 4: Simplify right side
    2,789.10x = 6,213,974.13
  5. Step 5: Solve for x
    x = 6,213,974.13/2,789.10
  6. Step 6: Final answer
    x = 2,227.95

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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.