Home / 8,451.19-12,679.80-3,770.78

Finding the Fourth Proportional to 8,451.19, 12,679.80 and 3,770.78

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Solution

The fourth proportional to 8,451.19, 12,679.80 and 3,770.78 is: 5,657.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,451.19 : 12,679.80 = 3,770.78 : x
  2. Step 2: Convert to fraction form
    8,451.19/12,679.80 = 3,770.78/x
  3. Step 3: Cross multiply
    8,451.19x = 12,679.80 × 3,770.78
  4. Step 4: Simplify right side
    8,451.19x = 47,812,736.24
  5. Step 5: Solve for x
    x = 47,812,736.24/8,451.19
  6. Step 6: Final answer
    x = 5,657.52

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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.