Home / 3,456.16-4,769.12-2,129.76

Finding the Fourth Proportional to 3,456.16, 4,769.12 and 2,129.76

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Solution

The fourth proportional to 3,456.16, 4,769.12 and 2,129.76 is: 2,938.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,456.16 : 4,769.12 = 2,129.76 : x
  2. Step 2: Convert to fraction form
    3,456.16/4,769.12 = 2,129.76/x
  3. Step 3: Cross multiply
    3,456.16x = 4,769.12 × 2,129.76
  4. Step 4: Simplify right side
    3,456.16x = 10,157,081.01
  5. Step 5: Solve for x
    x = 10,157,081.01/3,456.16
  6. Step 6: Final answer
    x = 2,938.83

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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.