Home / 1,318.07-1,966.87-1,143.11

Finding the Fourth Proportional to 1,318.07, 1,966.87 and 1,143.11

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Solution

The fourth proportional to 1,318.07, 1,966.87 and 1,143.11 is: 1,705.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318.07 : 1,966.87 = 1,143.11 : x
  2. Step 2: Convert to fraction form
    1,318.07/1,966.87 = 1,143.11/x
  3. Step 3: Cross multiply
    1,318.07x = 1,966.87 × 1,143.11
  4. Step 4: Simplify right side
    1,318.07x = 2,248,348.77
  5. Step 5: Solve for x
    x = 2,248,348.77/1,318.07
  6. Step 6: Final answer
    x = 1,705.79

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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.