Home / 2,717.79-3,750.89-1,538.84

Finding the Fourth Proportional to 2,717.79, 3,750.89 and 1,538.84

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Solution

The fourth proportional to 2,717.79, 3,750.89 and 1,538.84 is: 2,123.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,717.79 : 3,750.89 = 1,538.84 : x
  2. Step 2: Convert to fraction form
    2,717.79/3,750.89 = 1,538.84/x
  3. Step 3: Cross multiply
    2,717.79x = 3,750.89 × 1,538.84
  4. Step 4: Simplify right side
    2,717.79x = 5,771,993.12
  5. Step 5: Solve for x
    x = 5,771,993.12/2,717.79
  6. Step 6: Final answer
    x = 2,123.78

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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.