Home / 6,490.20-8,956.65-3,972.26

Finding the Fourth Proportional to 6,490.20, 8,956.65 and 3,972.26

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Solution

The fourth proportional to 6,490.20, 8,956.65 and 3,972.26 is: 5,481.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,490.20 : 8,956.65 = 3,972.26 : x
  2. Step 2: Convert to fraction form
    6,490.20/8,956.65 = 3,972.26/x
  3. Step 3: Cross multiply
    6,490.20x = 8,956.65 × 3,972.26
  4. Step 4: Simplify right side
    6,490.20x = 35,578,077.88
  5. Step 5: Solve for x
    x = 35,578,077.88/6,490.20
  6. Step 6: Final answer
    x = 5,481.82

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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.