Home / 8,381.18-12,562.05-6,739.58

Finding the Fourth Proportional to 8,381.18, 12,562.05 and 6,739.58

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Solution

The fourth proportional to 8,381.18, 12,562.05 and 6,739.58 is: 10,101.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,381.18 : 12,562.05 = 6,739.58 : x
  2. Step 2: Convert to fraction form
    8,381.18/12,562.05 = 6,739.58/x
  3. Step 3: Cross multiply
    8,381.18x = 12,562.05 × 6,739.58
  4. Step 4: Simplify right side
    8,381.18x = 84,662,940.94
  5. Step 5: Solve for x
    x = 84,662,940.94/8,381.18
  6. Step 6: Final answer
    x = 10,101.55

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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.