Home / 8,220.39-12,337.41-5,257.46

Finding the Fourth Proportional to 8,220.39, 12,337.41 and 5,257.46

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Solution

The fourth proportional to 8,220.39, 12,337.41 and 5,257.46 is: 7,890.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,220.39 : 12,337.41 = 5,257.46 : x
  2. Step 2: Convert to fraction form
    8,220.39/12,337.41 = 5,257.46/x
  3. Step 3: Cross multiply
    8,220.39x = 12,337.41 × 5,257.46
  4. Step 4: Simplify right side
    8,220.39x = 64,863,420.74
  5. Step 5: Solve for x
    x = 64,863,420.74/8,220.39
  6. Step 6: Final answer
    x = 7,890.56

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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.