Home / 3,742.20-5,164.90-3,111.89

Finding the Fourth Proportional to 3,742.20, 5,164.90 and 3,111.89

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Solution

The fourth proportional to 3,742.20, 5,164.90 and 3,111.89 is: 4,294.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,742.20 : 5,164.90 = 3,111.89 : x
  2. Step 2: Convert to fraction form
    3,742.20/5,164.90 = 3,111.89/x
  3. Step 3: Cross multiply
    3,742.20x = 5,164.90 × 3,111.89
  4. Step 4: Simplify right side
    3,742.20x = 16,072,567.06
  5. Step 5: Solve for x
    x = 16,072,567.06/3,742.20
  6. Step 6: Final answer
    x = 4,294.95

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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.