Home / 1,176.11-1,623.30-777.85

Finding the Fourth Proportional to 1,176.11, 1,623.30 and 777.85

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Solution

The fourth proportional to 1,176.11, 1,623.30 and 777.85 is: 1,073.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,176.11 : 1,623.30 = 777.85 : x
  2. Step 2: Convert to fraction form
    1,176.11/1,623.30 = 777.85/x
  3. Step 3: Cross multiply
    1,176.11x = 1,623.30 × 777.85
  4. Step 4: Simplify right side
    1,176.11x = 1,262,683.91
  5. Step 5: Solve for x
    x = 1,262,683.91/1,176.11
  6. Step 6: Final answer
    x = 1,073.61

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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.