Home / 3,142.65-4,324.08-2,721.72

Finding the Fourth Proportional to 3,142.65, 4,324.08 and 2,721.72

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Solution

The fourth proportional to 3,142.65, 4,324.08 and 2,721.72 is: 3,744.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,142.65 : 4,324.08 = 2,721.72 : x
  2. Step 2: Convert to fraction form
    3,142.65/4,324.08 = 2,721.72/x
  3. Step 3: Cross multiply
    3,142.65x = 4,324.08 × 2,721.72
  4. Step 4: Simplify right side
    3,142.65x = 11,768,935.02
  5. Step 5: Solve for x
    x = 11,768,935.02/3,142.65
  6. Step 6: Final answer
    x = 3,744.91

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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.