Home / 5,280.75-7,287.96-3,042.72

Finding the Fourth Proportional to 5,280.75, 7,287.96 and 3,042.72

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Solution

The fourth proportional to 5,280.75, 7,287.96 and 3,042.72 is: 4,199.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.75 : 7,287.96 = 3,042.72 : x
  2. Step 2: Convert to fraction form
    5,280.75/7,287.96 = 3,042.72/x
  3. Step 3: Cross multiply
    5,280.75x = 7,287.96 × 3,042.72
  4. Step 4: Simplify right side
    5,280.75x = 22,175,221.65
  5. Step 5: Solve for x
    x = 22,175,221.65/5,280.75
  6. Step 6: Final answer
    x = 4,199.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.