Home / 1,400.24-2,101.20-578.92

Finding the Fourth Proportional to 1,400.24, 2,101.20 and 578.92

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Solution

The fourth proportional to 1,400.24, 2,101.20 and 578.92 is: 868.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400.24 : 2,101.20 = 578.92 : x
  2. Step 2: Convert to fraction form
    1,400.24/2,101.20 = 578.92/x
  3. Step 3: Cross multiply
    1,400.24x = 2,101.20 × 578.92
  4. Step 4: Simplify right side
    1,400.24x = 1,216,426.70
  5. Step 5: Solve for x
    x = 1,216,426.70/1,400.24
  6. Step 6: Final answer
    x = 868.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.