Home / 1,723.53-2,378.35-977.56

Finding the Fourth Proportional to 1,723.53, 2,378.35 and 977.56

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Solution

The fourth proportional to 1,723.53, 2,378.35 and 977.56 is: 1,348.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,723.53 : 2,378.35 = 977.56 : x
  2. Step 2: Convert to fraction form
    1,723.53/2,378.35 = 977.56/x
  3. Step 3: Cross multiply
    1,723.53x = 2,378.35 × 977.56
  4. Step 4: Simplify right side
    1,723.53x = 2,324,979.83
  5. Step 5: Solve for x
    x = 2,324,979.83/1,723.53
  6. Step 6: Final answer
    x = 1,348.96

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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.