Home / 3,142.62-4,675.74-3,131.85

Finding the Fourth Proportional to 3,142.62, 4,675.74 and 3,131.85

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Solution

The fourth proportional to 3,142.62, 4,675.74 and 3,131.85 is: 4,659.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,142.62 : 4,675.74 = 3,131.85 : x
  2. Step 2: Convert to fraction form
    3,142.62/4,675.74 = 3,131.85/x
  3. Step 3: Cross multiply
    3,142.62x = 4,675.74 × 3,131.85
  4. Step 4: Simplify right side
    3,142.62x = 14,643,719.94
  5. Step 5: Solve for x
    x = 14,643,719.94/3,142.62
  6. Step 6: Final answer
    x = 4,659.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.