Home / 8,280.96-12,421.44-4,392.96

Finding the Fourth Proportional to 8,280.96, 12,421.44 and 4,392.96

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Solution

The fourth proportional to 8,280.96, 12,421.44 and 4,392.96 is: 6,589.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,280.96 : 12,421.44 = 4,392.96 : x
  2. Step 2: Convert to fraction form
    8,280.96/12,421.44 = 4,392.96/x
  3. Step 3: Cross multiply
    8,280.96x = 12,421.44 × 4,392.96
  4. Step 4: Simplify right side
    8,280.96x = 54,566,889.06
  5. Step 5: Solve for x
    x = 54,566,889.06/8,280.96
  6. Step 6: Final answer
    x = 6,589.44

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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.