Home / 5,279.13-7,285.05-2,921.22

Finding the Fourth Proportional to 5,279.13, 7,285.05 and 2,921.22

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Solution

The fourth proportional to 5,279.13, 7,285.05 and 2,921.22 is: 4,031.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.13 : 7,285.05 = 2,921.22 : x
  2. Step 2: Convert to fraction form
    5,279.13/7,285.05 = 2,921.22/x
  3. Step 3: Cross multiply
    5,279.13x = 7,285.05 × 2,921.22
  4. Step 4: Simplify right side
    5,279.13x = 21,281,233.76
  5. Step 5: Solve for x
    x = 21,281,233.76/5,279.13
  6. Step 6: Final answer
    x = 4,031.20

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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.