Home / 5,279.19-7,285.59-2,921.55

Finding the Fourth Proportional to 5,279.19, 7,285.59 and 2,921.55

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Solution

The fourth proportional to 5,279.19, 7,285.59 and 2,921.55 is: 4,031.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.19 : 7,285.59 = 2,921.55 : x
  2. Step 2: Convert to fraction form
    5,279.19/7,285.59 = 2,921.55/x
  3. Step 3: Cross multiply
    5,279.19x = 7,285.59 × 2,921.55
  4. Step 4: Simplify right side
    5,279.19x = 21,285,215.46
  5. Step 5: Solve for x
    x = 21,285,215.46/5,279.19
  6. Step 6: Final answer
    x = 4,031.91

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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.