Home / 3,930.80-5,895.48-1,590.68

Finding the Fourth Proportional to 3,930.80, 5,895.48 and 1,590.68

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Solution

The fourth proportional to 3,930.80, 5,895.48 and 1,590.68 is: 2,385.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.80 : 5,895.48 = 1,590.68 : x
  2. Step 2: Convert to fraction form
    3,930.80/5,895.48 = 1,590.68/x
  3. Step 3: Cross multiply
    3,930.80x = 5,895.48 × 1,590.68
  4. Step 4: Simplify right side
    3,930.80x = 9,377,822.13
  5. Step 5: Solve for x
    x = 9,377,822.13/3,930.80
  6. Step 6: Final answer
    x = 2,385.73

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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.