Home / 5,112.97-7,056.15-3,123.20

Finding the Fourth Proportional to 5,112.97, 7,056.15 and 3,123.20

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Solution

The fourth proportional to 5,112.97, 7,056.15 and 3,123.20 is: 4,310.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,112.97 : 7,056.15 = 3,123.20 : x
  2. Step 2: Convert to fraction form
    5,112.97/7,056.15 = 3,123.20/x
  3. Step 3: Cross multiply
    5,112.97x = 7,056.15 × 3,123.20
  4. Step 4: Simplify right side
    5,112.97x = 22,037,773.61
  5. Step 5: Solve for x
    x = 22,037,773.61/5,112.97
  6. Step 6: Final answer
    x = 4,310.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.