Home / 1,421.97-2,132.72-1,009.86

Finding the Fourth Proportional to 1,421.97, 2,132.72 and 1,009.86

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Solution

The fourth proportional to 1,421.97, 2,132.72 and 1,009.86 is: 1,514.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421.97 : 2,132.72 = 1,009.86 : x
  2. Step 2: Convert to fraction form
    1,421.97/2,132.72 = 1,009.86/x
  3. Step 3: Cross multiply
    1,421.97x = 2,132.72 × 1,009.86
  4. Step 4: Simplify right side
    1,421.97x = 2,153,748.62
  5. Step 5: Solve for x
    x = 2,153,748.62/1,421.97
  6. Step 6: Final answer
    x = 1,514.62

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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.