Home / 1,780.28-2,455.62-1,082.06

Finding the Fourth Proportional to 1,780.28, 2,455.62 and 1,082.06

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Solution

The fourth proportional to 1,780.28, 2,455.62 and 1,082.06 is: 1,492.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,780.28 : 2,455.62 = 1,082.06 : x
  2. Step 2: Convert to fraction form
    1,780.28/2,455.62 = 1,082.06/x
  3. Step 3: Cross multiply
    1,780.28x = 2,455.62 × 1,082.06
  4. Step 4: Simplify right side
    1,780.28x = 2,657,128.18
  5. Step 5: Solve for x
    x = 2,657,128.18/1,780.28
  6. Step 6: Final answer
    x = 1,492.53

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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.