Home / 1,723.92-2,378.85-977.70

Finding the Fourth Proportional to 1,723.92, 2,378.85 and 977.70

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Solution

The fourth proportional to 1,723.92, 2,378.85 and 977.70 is: 1,349.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,723.92 : 2,378.85 = 977.70 : x
  2. Step 2: Convert to fraction form
    1,723.92/2,378.85 = 977.70/x
  3. Step 3: Cross multiply
    1,723.92x = 2,378.85 × 977.70
  4. Step 4: Simplify right side
    1,723.92x = 2,325,801.65
  5. Step 5: Solve for x
    x = 2,325,801.65/1,723.92
  6. Step 6: Final answer
    x = 1,349.14

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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.