Home / 3,140.80-4,711.68-1,060.30

Finding the Fourth Proportional to 3,140.80, 4,711.68 and 1,060.30

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Solution

The fourth proportional to 3,140.80, 4,711.68 and 1,060.30 is: 1,590.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.80 : 4,711.68 = 1,060.30 : x
  2. Step 2: Convert to fraction form
    3,140.80/4,711.68 = 1,060.30/x
  3. Step 3: Cross multiply
    3,140.80x = 4,711.68 × 1,060.30
  4. Step 4: Simplify right side
    3,140.80x = 4,995,794.30
  5. Step 5: Solve for x
    x = 4,995,794.30/3,140.80
  6. Step 6: Final answer
    x = 1,590.61

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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.