Home / 5,421.25-8,132.69-1,959.31

Finding the Fourth Proportional to 5,421.25, 8,132.69 and 1,959.31

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Solution

The fourth proportional to 5,421.25, 8,132.69 and 1,959.31 is: 2,939.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.25 : 8,132.69 = 1,959.31 : x
  2. Step 2: Convert to fraction form
    5,421.25/8,132.69 = 1,959.31/x
  3. Step 3: Cross multiply
    5,421.25x = 8,132.69 × 1,959.31
  4. Step 4: Simplify right side
    5,421.25x = 15,934,460.84
  5. Step 5: Solve for x
    x = 15,934,460.84/5,421.25
  6. Step 6: Final answer
    x = 2,939.26

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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.