Home / 8,439.09-12,658.63-5,621.96

Finding the Fourth Proportional to 8,439.09, 12,658.63 and 5,621.96

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Solution

The fourth proportional to 8,439.09, 12,658.63 and 5,621.96 is: 8,432.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,439.09 : 12,658.63 = 5,621.96 : x
  2. Step 2: Convert to fraction form
    8,439.09/12,658.63 = 5,621.96/x
  3. Step 3: Cross multiply
    8,439.09x = 12,658.63 × 5,621.96
  4. Step 4: Simplify right side
    8,439.09x = 71,166,268.44
  5. Step 5: Solve for x
    x = 71,166,268.44/8,439.09
  6. Step 6: Final answer
    x = 8,432.94

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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.