Home / 2,712.95-3,747.39-1,872.17

Finding the Fourth Proportional to 2,712.95, 3,747.39 and 1,872.17

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Solution

The fourth proportional to 2,712.95, 3,747.39 and 1,872.17 is: 2,586.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,712.95 : 3,747.39 = 1,872.17 : x
  2. Step 2: Convert to fraction form
    2,712.95/3,747.39 = 1,872.17/x
  3. Step 3: Cross multiply
    2,712.95x = 3,747.39 × 1,872.17
  4. Step 4: Simplify right side
    2,712.95x = 7,015,755.24
  5. Step 5: Solve for x
    x = 7,015,755.24/2,712.95
  6. Step 6: Final answer
    x = 2,586.02

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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.