Home / 1,127.18-1,682.24-1,098.02

Finding the Fourth Proportional to 1,127.18, 1,682.24 and 1,098.02

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Solution

The fourth proportional to 1,127.18, 1,682.24 and 1,098.02 is: 1,638.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127.18 : 1,682.24 = 1,098.02 : x
  2. Step 2: Convert to fraction form
    1,127.18/1,682.24 = 1,098.02/x
  3. Step 3: Cross multiply
    1,127.18x = 1,682.24 × 1,098.02
  4. Step 4: Simplify right side
    1,127.18x = 1,847,119.26
  5. Step 5: Solve for x
    x = 1,847,119.26/1,127.18
  6. Step 6: Final answer
    x = 1,638.72

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.