Home / 5,105.42-7,045.65-2,867.69

Finding the Fourth Proportional to 5,105.42, 7,045.65 and 2,867.69

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Solution

The fourth proportional to 5,105.42, 7,045.65 and 2,867.69 is: 3,957.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,105.42 : 7,045.65 = 2,867.69 : x
  2. Step 2: Convert to fraction form
    5,105.42/7,045.65 = 2,867.69/x
  3. Step 3: Cross multiply
    5,105.42x = 7,045.65 × 2,867.69
  4. Step 4: Simplify right side
    5,105.42x = 20,204,740.05
  5. Step 5: Solve for x
    x = 20,204,740.05/5,105.42
  6. Step 6: Final answer
    x = 3,957.51

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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.