Home / 3,850.60-5,312.90-2,279.08

Finding the Fourth Proportional to 3,850.60, 5,312.90 and 2,279.08

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Solution

The fourth proportional to 3,850.60, 5,312.90 and 2,279.08 is: 3,144.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,850.60 : 5,312.90 = 2,279.08 : x
  2. Step 2: Convert to fraction form
    3,850.60/5,312.90 = 2,279.08/x
  3. Step 3: Cross multiply
    3,850.60x = 5,312.90 × 2,279.08
  4. Step 4: Simplify right side
    3,850.60x = 12,108,524.13
  5. Step 5: Solve for x
    x = 12,108,524.13/3,850.60
  6. Step 6: Final answer
    x = 3,144.58

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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.