Home / 1,780.11-2,654.24-1,777.68

Finding the Fourth Proportional to 1,780.11, 2,654.24 and 1,777.68

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Solution

The fourth proportional to 1,780.11, 2,654.24 and 1,777.68 is: 2,650.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,780.11 : 2,654.24 = 1,777.68 : x
  2. Step 2: Convert to fraction form
    1,780.11/2,654.24 = 1,777.68/x
  3. Step 3: Cross multiply
    1,780.11x = 2,654.24 × 1,777.68
  4. Step 4: Simplify right side
    1,780.11x = 4,718,380.47
  5. Step 5: Solve for x
    x = 4,718,380.47/1,780.11
  6. Step 6: Final answer
    x = 2,650.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.