Home / 1,780.95-2,457.68-1,082.55

Finding the Fourth Proportional to 1,780.95, 2,457.68 and 1,082.55

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Solution

The fourth proportional to 1,780.95, 2,457.68 and 1,082.55 is: 1,493.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,780.95 : 2,457.68 = 1,082.55 : x
  2. Step 2: Convert to fraction form
    1,780.95/2,457.68 = 1,082.55/x
  3. Step 3: Cross multiply
    1,780.95x = 2,457.68 × 1,082.55
  4. Step 4: Simplify right side
    1,780.95x = 2,660,556.07
  5. Step 5: Solve for x
    x = 2,660,556.07/1,780.95
  6. Step 6: Final answer
    x = 1,493.90

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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.