Home / 3,191.90-4,784.28-1,342.46

Finding the Fourth Proportional to 3,191.90, 4,784.28 and 1,342.46

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Solution

The fourth proportional to 3,191.90, 4,784.28 and 1,342.46 is: 2,012.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,191.90 : 4,784.28 = 1,342.46 : x
  2. Step 2: Convert to fraction form
    3,191.90/4,784.28 = 1,342.46/x
  3. Step 3: Cross multiply
    3,191.90x = 4,784.28 × 1,342.46
  4. Step 4: Simplify right side
    3,191.90x = 6,422,680.61
  5. Step 5: Solve for x
    x = 6,422,680.61/3,191.90
  6. Step 6: Final answer
    x = 2,012.18

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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.