Home / 1,412.17-2,118.26-579.69

Finding the Fourth Proportional to 1,412.17, 2,118.26 and 579.69

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Solution

The fourth proportional to 1,412.17, 2,118.26 and 579.69 is: 869.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,412.17 : 2,118.26 = 579.69 : x
  2. Step 2: Convert to fraction form
    1,412.17/2,118.26 = 579.69/x
  3. Step 3: Cross multiply
    1,412.17x = 2,118.26 × 579.69
  4. Step 4: Simplify right side
    1,412.17x = 1,227,934.14
  5. Step 5: Solve for x
    x = 1,227,934.14/1,412.17
  6. Step 6: Final answer
    x = 869.54

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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.