Home / 3,188.16-4,780.22-1,340.55

Finding the Fourth Proportional to 3,188.16, 4,780.22 and 1,340.55

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Solution

The fourth proportional to 3,188.16, 4,780.22 and 1,340.55 is: 2,009.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188.16 : 4,780.22 = 1,340.55 : x
  2. Step 2: Convert to fraction form
    3,188.16/4,780.22 = 1,340.55/x
  3. Step 3: Cross multiply
    3,188.16x = 4,780.22 × 1,340.55
  4. Step 4: Simplify right side
    3,188.16x = 6,408,117.22
  5. Step 5: Solve for x
    x = 6,408,117.22/3,188.16
  6. Step 6: Final answer
    x = 2,009.97

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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.