Home / 1,543.72-2,316.06-1,421.56

Finding the Fourth Proportional to 1,543.72, 2,316.06 and 1,421.56

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Solution

The fourth proportional to 1,543.72, 2,316.06 and 1,421.56 is: 2,132.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,543.72 : 2,316.06 = 1,421.56 : x
  2. Step 2: Convert to fraction form
    1,543.72/2,316.06 = 1,421.56/x
  3. Step 3: Cross multiply
    1,543.72x = 2,316.06 × 1,421.56
  4. Step 4: Simplify right side
    1,543.72x = 3,292,418.25
  5. Step 5: Solve for x
    x = 3,292,418.25/1,543.72
  6. Step 6: Final answer
    x = 2,132.78

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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.