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Finding the Fourth Proportional to 2,984.90, 4,480.11 and 2,152.82

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Solution

The fourth proportional to 2,984.90, 4,480.11 and 2,152.82 is: 3,231.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,984.90 : 4,480.11 = 2,152.82 : x
  2. Step 2: Convert to fraction form
    2,984.90/4,480.11 = 2,152.82/x
  3. Step 3: Cross multiply
    2,984.90x = 4,480.11 × 2,152.82
  4. Step 4: Simplify right side
    2,984.90x = 9,644,870.41
  5. Step 5: Solve for x
    x = 9,644,870.41/2,984.90
  6. Step 6: Final answer
    x = 3,231.22

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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.