Home / 1,921.53-2,651.76-1,082.18

Finding the Fourth Proportional to 1,921.53, 2,651.76 and 1,082.18

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Solution

The fourth proportional to 1,921.53, 2,651.76 and 1,082.18 is: 1,493.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.53 : 2,651.76 = 1,082.18 : x
  2. Step 2: Convert to fraction form
    1,921.53/2,651.76 = 1,082.18/x
  3. Step 3: Cross multiply
    1,921.53x = 2,651.76 × 1,082.18
  4. Step 4: Simplify right side
    1,921.53x = 2,869,668.38
  5. Step 5: Solve for x
    x = 2,869,668.38/1,921.53
  6. Step 6: Final answer
    x = 1,493.43

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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.