Home / 1,610.86-2,221.92-1,278.76

Finding the Fourth Proportional to 1,610.86, 2,221.92 and 1,278.76

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Solution

The fourth proportional to 1,610.86, 2,221.92 and 1,278.76 is: 1,763.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,610.86 : 2,221.92 = 1,278.76 : x
  2. Step 2: Convert to fraction form
    1,610.86/2,221.92 = 1,278.76/x
  3. Step 3: Cross multiply
    1,610.86x = 2,221.92 × 1,278.76
  4. Step 4: Simplify right side
    1,610.86x = 2,841,302.42
  5. Step 5: Solve for x
    x = 2,841,302.42/1,610.86
  6. Step 6: Final answer
    x = 1,763.84

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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.