Home / 3,590.20-5,385.30-1,125.21

Finding the Fourth Proportional to 3,590.20, 5,385.30 and 1,125.21

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Solution

The fourth proportional to 3,590.20, 5,385.30 and 1,125.21 is: 1,687.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,590.20 : 5,385.30 = 1,125.21 : x
  2. Step 2: Convert to fraction form
    3,590.20/5,385.30 = 1,125.21/x
  3. Step 3: Cross multiply
    3,590.20x = 5,385.30 × 1,125.21
  4. Step 4: Simplify right side
    3,590.20x = 6,059,589.19
  5. Step 5: Solve for x
    x = 6,059,589.19/3,590.20
  6. Step 6: Final answer
    x = 1,687.82

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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.