Home / 2,177.20-3,264.72-878.50

Finding the Fourth Proportional to 2,177.20, 3,264.72 and 878.50

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Solution

The fourth proportional to 2,177.20, 3,264.72 and 878.50 is: 1,317.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,177.20 : 3,264.72 = 878.50 : x
  2. Step 2: Convert to fraction form
    2,177.20/3,264.72 = 878.50/x
  3. Step 3: Cross multiply
    2,177.20x = 3,264.72 × 878.50
  4. Step 4: Simplify right side
    2,177.20x = 2,868,056.52
  5. Step 5: Solve for x
    x = 2,868,056.52/2,177.20
  6. Step 6: Final answer
    x = 1,317.31

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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.