Home / 8,380.56-12,572.40-4,221.36

Finding the Fourth Proportional to 8,380.56, 12,572.40 and 4,221.36

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Solution

The fourth proportional to 8,380.56, 12,572.40 and 4,221.36 is: 6,332.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,380.56 : 12,572.40 = 4,221.36 : x
  2. Step 2: Convert to fraction form
    8,380.56/12,572.40 = 4,221.36/x
  3. Step 3: Cross multiply
    8,380.56x = 12,572.40 × 4,221.36
  4. Step 4: Simplify right side
    8,380.56x = 53,072,626.46
  5. Step 5: Solve for x
    x = 53,072,626.46/8,380.56
  6. Step 6: Final answer
    x = 6,332.83

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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.