Home / 5,040.80-7,550.40-3,291.20

Finding the Fourth Proportional to 5,040.80, 7,550.40 and 3,291.20

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Solution

The fourth proportional to 5,040.80, 7,550.40 and 3,291.20 is: 4,929.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,040.80 : 7,550.40 = 3,291.20 : x
  2. Step 2: Convert to fraction form
    5,040.80/7,550.40 = 3,291.20/x
  3. Step 3: Cross multiply
    5,040.80x = 7,550.40 × 3,291.20
  4. Step 4: Simplify right side
    5,040.80x = 24,849,876.48
  5. Step 5: Solve for x
    x = 24,849,876.48/5,040.80
  6. Step 6: Final answer
    x = 4,929.75

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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.