Home / 1,723.12-2,378.03-977.15

Finding the Fourth Proportional to 1,723.12, 2,378.03 and 977.15

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Solution

The fourth proportional to 1,723.12, 2,378.03 and 977.15 is: 1,348.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,723.12 : 2,378.03 = 977.15 : x
  2. Step 2: Convert to fraction form
    1,723.12/2,378.03 = 977.15/x
  3. Step 3: Cross multiply
    1,723.12x = 2,378.03 × 977.15
  4. Step 4: Simplify right side
    1,723.12x = 2,323,687.94
  5. Step 5: Solve for x
    x = 2,323,687.94/1,723.12
  6. Step 6: Final answer
    x = 1,348.53

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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.