Home / 1,126.24-1,686.96-849.28

Finding the Fourth Proportional to 1,126.24, 1,686.96 and 849.28

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Solution

The fourth proportional to 1,126.24, 1,686.96 and 849.28 is: 1,272.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.24 : 1,686.96 = 849.28 : x
  2. Step 2: Convert to fraction form
    1,126.24/1,686.96 = 849.28/x
  3. Step 3: Cross multiply
    1,126.24x = 1,686.96 × 849.28
  4. Step 4: Simplify right side
    1,126.24x = 1,432,701.39
  5. Step 5: Solve for x
    x = 1,432,701.39/1,126.24
  6. Step 6: Final answer
    x = 1,272.11

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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.