Home / 3,513.40-5,255.70-3,167.80

Finding the Fourth Proportional to 3,513.40, 5,255.70 and 3,167.80

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Solution

The fourth proportional to 3,513.40, 5,255.70 and 3,167.80 is: 4,738.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,513.40 : 5,255.70 = 3,167.80 : x
  2. Step 2: Convert to fraction form
    3,513.40/5,255.70 = 3,167.80/x
  3. Step 3: Cross multiply
    3,513.40x = 5,255.70 × 3,167.80
  4. Step 4: Simplify right side
    3,513.40x = 16,649,006.46
  5. Step 5: Solve for x
    x = 16,649,006.46/3,513.40
  6. Step 6: Final answer
    x = 4,738.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.