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Finding the Fourth Proportional to 5,275.13, 7,279.88 and 2,917.22

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Solution

The fourth proportional to 5,275.13, 7,279.88 and 2,917.22 is: 4,025.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,275.13 : 7,279.88 = 2,917.22 : x
  2. Step 2: Convert to fraction form
    5,275.13/7,279.88 = 2,917.22/x
  3. Step 3: Cross multiply
    5,275.13x = 7,279.88 × 2,917.22
  4. Step 4: Simplify right side
    5,275.13x = 21,236,960.55
  5. Step 5: Solve for x
    x = 21,236,960.55/5,275.13
  6. Step 6: Final answer
    x = 4,025.87

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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.