Home / 8,426.40-12,639.60-3,499.44

Finding the Fourth Proportional to 8,426.40, 12,639.60 and 3,499.44

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Solution

The fourth proportional to 8,426.40, 12,639.60 and 3,499.44 is: 5,249.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,426.40 : 12,639.60 = 3,499.44 : x
  2. Step 2: Convert to fraction form
    8,426.40/12,639.60 = 3,499.44/x
  3. Step 3: Cross multiply
    8,426.40x = 12,639.60 × 3,499.44
  4. Step 4: Simplify right side
    8,426.40x = 44,231,521.82
  5. Step 5: Solve for x
    x = 44,231,521.82/8,426.40
  6. Step 6: Final answer
    x = 5,249.16

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Half scale
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Double scale
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Similar ratio
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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.