Home / 1,868.79-2,578.35-1,082.68

Finding the Fourth Proportional to 1,868.79, 2,578.35 and 1,082.68

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Solution

The fourth proportional to 1,868.79, 2,578.35 and 1,082.68 is: 1,493.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868.79 : 2,578.35 = 1,082.68 : x
  2. Step 2: Convert to fraction form
    1,868.79/2,578.35 = 1,082.68/x
  3. Step 3: Cross multiply
    1,868.79x = 2,578.35 × 1,082.68
  4. Step 4: Simplify right side
    1,868.79x = 2,791,534.01
  5. Step 5: Solve for x
    x = 2,791,534.01/1,868.79
  6. Step 6: Final answer
    x = 1,493.77

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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.