Home / 5,105.79-7,045.86-2,867.56

Finding the Fourth Proportional to 5,105.79, 7,045.86 and 2,867.56

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Solution

The fourth proportional to 5,105.79, 7,045.86 and 2,867.56 is: 3,957.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,105.79 : 7,045.86 = 2,867.56 : x
  2. Step 2: Convert to fraction form
    5,105.79/7,045.86 = 2,867.56/x
  3. Step 3: Cross multiply
    5,105.79x = 7,045.86 × 2,867.56
  4. Step 4: Simplify right side
    5,105.79x = 20,204,426.30
  5. Step 5: Solve for x
    x = 20,204,426.30/5,105.79
  6. Step 6: Final answer
    x = 3,957.16

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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.