Home / 1,704.28-2,562.12-1,398.40

Finding the Fourth Proportional to 1,704.28, 2,562.12 and 1,398.40

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Solution

The fourth proportional to 1,704.28, 2,562.12 and 1,398.40 is: 2,102.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,704.28 : 2,562.12 = 1,398.40 : x
  2. Step 2: Convert to fraction form
    1,704.28/2,562.12 = 1,398.40/x
  3. Step 3: Cross multiply
    1,704.28x = 2,562.12 × 1,398.40
  4. Step 4: Simplify right side
    1,704.28x = 3,582,868.61
  5. Step 5: Solve for x
    x = 3,582,868.61/1,704.28
  6. Step 6: Final answer
    x = 2,102.28

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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.