Home / 5,132.76-7,081.90-3,142.60

Finding the Fourth Proportional to 5,132.76, 7,081.90 and 3,142.60

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Solution

The fourth proportional to 5,132.76, 7,081.90 and 3,142.60 is: 4,335.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,132.76 : 7,081.90 = 3,142.60 : x
  2. Step 2: Convert to fraction form
    5,132.76/7,081.90 = 3,142.60/x
  3. Step 3: Cross multiply
    5,132.76x = 7,081.90 × 3,142.60
  4. Step 4: Simplify right side
    5,132.76x = 22,255,578.94
  5. Step 5: Solve for x
    x = 22,255,578.94/5,132.76
  6. Step 6: Final answer
    x = 4,335.99

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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.