Home / 6,439.76-9,655.68-2,279.28

Finding the Fourth Proportional to 6,439.76, 9,655.68 and 2,279.28

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Solution

The fourth proportional to 6,439.76, 9,655.68 and 2,279.28 is: 3,417.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,439.76 : 9,655.68 = 2,279.28 : x
  2. Step 2: Convert to fraction form
    6,439.76/9,655.68 = 2,279.28/x
  3. Step 3: Cross multiply
    6,439.76x = 9,655.68 × 2,279.28
  4. Step 4: Simplify right side
    6,439.76x = 22,007,998.31
  5. Step 5: Solve for x
    x = 22,007,998.31/6,439.76
  6. Step 6: Final answer
    x = 3,417.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.