Home / 3,291.72-4,541.85-1,965.21

Finding the Fourth Proportional to 3,291.72, 4,541.85 and 1,965.21

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Solution

The fourth proportional to 3,291.72, 4,541.85 and 1,965.21 is: 2,711.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,291.72 : 4,541.85 = 1,965.21 : x
  2. Step 2: Convert to fraction form
    3,291.72/4,541.85 = 1,965.21/x
  3. Step 3: Cross multiply
    3,291.72x = 4,541.85 × 1,965.21
  4. Step 4: Simplify right side
    3,291.72x = 8,925,689.04
  5. Step 5: Solve for x
    x = 8,925,689.04/3,291.72
  6. Step 6: Final answer
    x = 2,711.56

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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.