Home / 1,311.95-1,968.71-1,177.49

Finding the Fourth Proportional to 1,311.95, 1,968.71 and 1,177.49

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Solution

The fourth proportional to 1,311.95, 1,968.71 and 1,177.49 is: 1,766.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311.95 : 1,968.71 = 1,177.49 : x
  2. Step 2: Convert to fraction form
    1,311.95/1,968.71 = 1,177.49/x
  3. Step 3: Cross multiply
    1,311.95x = 1,968.71 × 1,177.49
  4. Step 4: Simplify right side
    1,311.95x = 2,318,120.61
  5. Step 5: Solve for x
    x = 2,318,120.61/1,311.95
  6. Step 6: Final answer
    x = 1,766.93

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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.