Home / 3,851.12-5,319.59-3,107.85

Finding the Fourth Proportional to 3,851.12, 5,319.59 and 3,107.85

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Solution

The fourth proportional to 3,851.12, 5,319.59 and 3,107.85 is: 4,292.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,851.12 : 5,319.59 = 3,107.85 : x
  2. Step 2: Convert to fraction form
    3,851.12/5,319.59 = 3,107.85/x
  3. Step 3: Cross multiply
    3,851.12x = 5,319.59 × 3,107.85
  4. Step 4: Simplify right side
    3,851.12x = 16,532,472.24
  5. Step 5: Solve for x
    x = 16,532,472.24/3,851.12
  6. Step 6: Final answer
    x = 4,292.91

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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.