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Finding the Fourth Proportional to 2,187.90, 3,282.42 and 802.02

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Solution

The fourth proportional to 2,187.90, 3,282.42 and 802.02 is: 1,203.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.90 : 3,282.42 = 802.02 : x
  2. Step 2: Convert to fraction form
    2,187.90/3,282.42 = 802.02/x
  3. Step 3: Cross multiply
    2,187.90x = 3,282.42 × 802.02
  4. Step 4: Simplify right side
    2,187.90x = 2,632,566.49
  5. Step 5: Solve for x
    x = 2,632,566.49/2,187.90
  6. Step 6: Final answer
    x = 1,203.24

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.