Home / 3,243.92-4,478.10-2,124.90

Finding the Fourth Proportional to 3,243.92, 4,478.10 and 2,124.90

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Solution

The fourth proportional to 3,243.92, 4,478.10 and 2,124.90 is: 2,933.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,243.92 : 4,478.10 = 2,124.90 : x
  2. Step 2: Convert to fraction form
    3,243.92/4,478.10 = 2,124.90/x
  3. Step 3: Cross multiply
    3,243.92x = 4,478.10 × 2,124.90
  4. Step 4: Simplify right side
    3,243.92x = 9,515,514.69
  5. Step 5: Solve for x
    x = 9,515,514.69/3,243.92
  6. Step 6: Final answer
    x = 2,933.34

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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.