Home / 1,366.20-2,047.14-878.85

Finding the Fourth Proportional to 1,366.20, 2,047.14 and 878.85

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Solution

The fourth proportional to 1,366.20, 2,047.14 and 878.85 is: 1,316.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,366.20 : 2,047.14 = 878.85 : x
  2. Step 2: Convert to fraction form
    1,366.20/2,047.14 = 878.85/x
  3. Step 3: Cross multiply
    1,366.20x = 2,047.14 × 878.85
  4. Step 4: Simplify right side
    1,366.20x = 1,799,128.99
  5. Step 5: Solve for x
    x = 1,799,128.99/1,366.20
  6. Step 6: Final answer
    x = 1,316.89

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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.