Home / 3,851.38-5,312.79-2,279.17

Finding the Fourth Proportional to 3,851.38, 5,312.79 and 2,279.17

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Solution

The fourth proportional to 3,851.38, 5,312.79 and 2,279.17 is: 3,144.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,851.38 : 5,312.79 = 2,279.17 : x
  2. Step 2: Convert to fraction form
    3,851.38/5,312.79 = 2,279.17/x
  3. Step 3: Cross multiply
    3,851.38x = 5,312.79 × 2,279.17
  4. Step 4: Simplify right side
    3,851.38x = 12,108,751.58
  5. Step 5: Solve for x
    x = 12,108,751.58/3,851.38
  6. Step 6: Final answer
    x = 3,144.00

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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.