Home / 1,126.14-1,554.39-712.86

Finding the Fourth Proportional to 1,126.14, 1,554.39 and 712.86

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Solution

The fourth proportional to 1,126.14, 1,554.39 and 712.86 is: 983.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.14 : 1,554.39 = 712.86 : x
  2. Step 2: Convert to fraction form
    1,126.14/1,554.39 = 712.86/x
  3. Step 3: Cross multiply
    1,126.14x = 1,554.39 × 712.86
  4. Step 4: Simplify right side
    1,126.14x = 1,108,062.46
  5. Step 5: Solve for x
    x = 1,108,062.46/1,126.14
  6. Step 6: Final answer
    x = 983.95

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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.