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Finding the Fourth Proportional to 2,750.16, 4,125.82 and 802.20

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Solution

The fourth proportional to 2,750.16, 4,125.82 and 802.20 is: 1,203.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,750.16 : 4,125.82 = 802.20 : x
  2. Step 2: Convert to fraction form
    2,750.16/4,125.82 = 802.20/x
  3. Step 3: Cross multiply
    2,750.16x = 4,125.82 × 802.20
  4. Step 4: Simplify right side
    2,750.16x = 3,309,732.80
  5. Step 5: Solve for x
    x = 3,309,732.80/2,750.16
  6. Step 6: Final answer
    x = 1,203.47

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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.