Home / 2,717.89-3,750.87-1,538.95

Finding the Fourth Proportional to 2,717.89, 3,750.87 and 1,538.95

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Solution

The fourth proportional to 2,717.89, 3,750.87 and 1,538.95 is: 2,123.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,717.89 : 3,750.87 = 1,538.95 : x
  2. Step 2: Convert to fraction form
    2,717.89/3,750.87 = 1,538.95/x
  3. Step 3: Cross multiply
    2,717.89x = 3,750.87 × 1,538.95
  4. Step 4: Simplify right side
    2,717.89x = 5,772,401.39
  5. Step 5: Solve for x
    x = 5,772,401.39/2,717.89
  6. Step 6: Final answer
    x = 2,123.85

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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.