Home / 5,276.28-7,279.56-3,151.20

Finding the Fourth Proportional to 5,276.28, 7,279.56 and 3,151.20

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Solution

The fourth proportional to 5,276.28, 7,279.56 and 3,151.20 is: 4,347.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,276.28 : 7,279.56 = 3,151.20 : x
  2. Step 2: Convert to fraction form
    5,276.28/7,279.56 = 3,151.20/x
  3. Step 3: Cross multiply
    5,276.28x = 7,279.56 × 3,151.20
  4. Step 4: Simplify right side
    5,276.28x = 22,939,349.47
  5. Step 5: Solve for x
    x = 22,939,349.47/5,276.28
  6. Step 6: Final answer
    x = 4,347.64

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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.