Home / 3,165.89-4,358.21-2,721.20

Finding the Fourth Proportional to 3,165.89, 4,358.21 and 2,721.20

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Solution

The fourth proportional to 3,165.89, 4,358.21 and 2,721.20 is: 3,746.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,165.89 : 4,358.21 = 2,721.20 : x
  2. Step 2: Convert to fraction form
    3,165.89/4,358.21 = 2,721.20/x
  3. Step 3: Cross multiply
    3,165.89x = 4,358.21 × 2,721.20
  4. Step 4: Simplify right side
    3,165.89x = 11,859,525.65
  5. Step 5: Solve for x
    x = 11,859,525.65/3,165.89
  6. Step 6: Final answer
    x = 3,746.04

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1.5x scale

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.