Home / 1,125.97-1,687.01-1,011.83

Finding the Fourth Proportional to 1,125.97, 1,687.01 and 1,011.83

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Solution

The fourth proportional to 1,125.97, 1,687.01 and 1,011.83 is: 1,516.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125.97 : 1,687.01 = 1,011.83 : x
  2. Step 2: Convert to fraction form
    1,125.97/1,687.01 = 1,011.83/x
  3. Step 3: Cross multiply
    1,125.97x = 1,687.01 × 1,011.83
  4. Step 4: Simplify right side
    1,125.97x = 1,706,971.55
  5. Step 5: Solve for x
    x = 1,706,971.55/1,125.97
  6. Step 6: Final answer
    x = 1,516.01

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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.