Home / 2,920.80-4,377.36-1,382.24

Finding the Fourth Proportional to 2,920.80, 4,377.36 and 1,382.24

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Solution

The fourth proportional to 2,920.80, 4,377.36 and 1,382.24 is: 2,071.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.80 : 4,377.36 = 1,382.24 : x
  2. Step 2: Convert to fraction form
    2,920.80/4,377.36 = 1,382.24/x
  3. Step 3: Cross multiply
    2,920.80x = 4,377.36 × 1,382.24
  4. Step 4: Simplify right side
    2,920.80x = 6,050,562.09
  5. Step 5: Solve for x
    x = 6,050,562.09/2,920.80
  6. Step 6: Final answer
    x = 2,071.54

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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.