Home / 1,400.42-2,101.22-579.29

Finding the Fourth Proportional to 1,400.42, 2,101.22 and 579.29

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Solution

The fourth proportional to 1,400.42, 2,101.22 and 579.29 is: 869.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400.42 : 2,101.22 = 579.29 : x
  2. Step 2: Convert to fraction form
    1,400.42/2,101.22 = 579.29/x
  3. Step 3: Cross multiply
    1,400.42x = 2,101.22 × 579.29
  4. Step 4: Simplify right side
    1,400.42x = 1,217,206.68
  5. Step 5: Solve for x
    x = 1,217,206.68/1,400.42
  6. Step 6: Final answer
    x = 869.18

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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.