Home / 8,439.80-12,636.91-5,660.48

Finding the Fourth Proportional to 8,439.80, 12,636.91 and 5,660.48

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Solution

The fourth proportional to 8,439.80, 12,636.91 and 5,660.48 is: 8,475.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,439.80 : 12,636.91 = 5,660.48 : x
  2. Step 2: Convert to fraction form
    8,439.80/12,636.91 = 5,660.48/x
  3. Step 3: Cross multiply
    8,439.80x = 12,636.91 × 5,660.48
  4. Step 4: Simplify right side
    8,439.80x = 71,531,014.98
  5. Step 5: Solve for x
    x = 71,531,014.98/8,439.80
  6. Step 6: Final answer
    x = 8,475.44

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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.