Home / 1,723.11-2,377.78-977.05

Finding the Fourth Proportional to 1,723.11, 2,377.78 and 977.05

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Solution

The fourth proportional to 1,723.11, 2,377.78 and 977.05 is: 1,348.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,723.11 : 2,377.78 = 977.05 : x
  2. Step 2: Convert to fraction form
    1,723.11/2,377.78 = 977.05/x
  3. Step 3: Cross multiply
    1,723.11x = 2,377.78 × 977.05
  4. Step 4: Simplify right side
    1,723.11x = 2,323,209.95
  5. Step 5: Solve for x
    x = 2,323,209.95/1,723.11
  6. Step 6: Final answer
    x = 1,348.27

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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.