Home / 2,920.75-4,378.52-1,071.43

Finding the Fourth Proportional to 2,920.75, 4,378.52 and 1,071.43

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Solution

The fourth proportional to 2,920.75, 4,378.52 and 1,071.43 is: 1,606.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.75 : 4,378.52 = 1,071.43 : x
  2. Step 2: Convert to fraction form
    2,920.75/4,378.52 = 1,071.43/x
  3. Step 3: Cross multiply
    2,920.75x = 4,378.52 × 1,071.43
  4. Step 4: Simplify right side
    2,920.75x = 4,691,272.33
  5. Step 5: Solve for x
    x = 4,691,272.33/2,920.75
  6. Step 6: Final answer
    x = 1,606.19

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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.