Home / 8,123.22-12,172.07-6,278.85

Finding the Fourth Proportional to 8,123.22, 12,172.07 and 6,278.85

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Solution

The fourth proportional to 8,123.22, 12,172.07 and 6,278.85 is: 9,408.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,123.22 : 12,172.07 = 6,278.85 : x
  2. Step 2: Convert to fraction form
    8,123.22/12,172.07 = 6,278.85/x
  3. Step 3: Cross multiply
    8,123.22x = 12,172.07 × 6,278.85
  4. Step 4: Simplify right side
    8,123.22x = 76,426,617.42
  5. Step 5: Solve for x
    x = 76,426,617.42/8,123.22
  6. Step 6: Final answer
    x = 9,408.41

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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.