Home / 1,267.52-1,750.40-986.85

Finding the Fourth Proportional to 1,267.52, 1,750.40 and 986.85

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Solution

The fourth proportional to 1,267.52, 1,750.40 and 986.85 is: 1,362.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,267.52 : 1,750.40 = 986.85 : x
  2. Step 2: Convert to fraction form
    1,267.52/1,750.40 = 986.85/x
  3. Step 3: Cross multiply
    1,267.52x = 1,750.40 × 986.85
  4. Step 4: Simplify right side
    1,267.52x = 1,727,377.31
  5. Step 5: Solve for x
    x = 1,727,377.31/1,267.52
  6. Step 6: Final answer
    x = 1,362.81

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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.