Home / 2,101.92-2,901.20-1,262.66

Finding the Fourth Proportional to 2,101.92, 2,901.20 and 1,262.66

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Solution

The fourth proportional to 2,101.92, 2,901.20 and 1,262.66 is: 1,742.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,101.92 : 2,901.20 = 1,262.66 : x
  2. Step 2: Convert to fraction form
    2,101.92/2,901.20 = 1,262.66/x
  3. Step 3: Cross multiply
    2,101.92x = 2,901.20 × 1,262.66
  4. Step 4: Simplify right side
    2,101.92x = 3,663,229.19
  5. Step 5: Solve for x
    x = 3,663,229.19/2,101.92
  6. Step 6: Final answer
    x = 1,742.80

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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.