Home / 1,678.42-2,517.45-1,028.02

Finding the Fourth Proportional to 1,678.42, 2,517.45 and 1,028.02

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Solution

The fourth proportional to 1,678.42, 2,517.45 and 1,028.02 is: 1,541.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,678.42 : 2,517.45 = 1,028.02 : x
  2. Step 2: Convert to fraction form
    1,678.42/2,517.45 = 1,028.02/x
  3. Step 3: Cross multiply
    1,678.42x = 2,517.45 × 1,028.02
  4. Step 4: Simplify right side
    1,678.42x = 2,587,988.95
  5. Step 5: Solve for x
    x = 2,587,988.95/1,678.42
  6. Step 6: Final answer
    x = 1,541.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.