Home / 3,101.60-4,279.08-2,431.88

Finding the Fourth Proportional to 3,101.60, 4,279.08 and 2,431.88

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Solution

The fourth proportional to 3,101.60, 4,279.08 and 2,431.88 is: 3,355.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,101.60 : 4,279.08 = 2,431.88 : x
  2. Step 2: Convert to fraction form
    3,101.60/4,279.08 = 2,431.88/x
  3. Step 3: Cross multiply
    3,101.60x = 4,279.08 × 2,431.88
  4. Step 4: Simplify right side
    3,101.60x = 10,406,209.07
  5. Step 5: Solve for x
    x = 10,406,209.07/3,101.60
  6. Step 6: Final answer
    x = 3,355.11

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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.