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Finding the Fourth Proportional to 2,191.02, 3,287.10 and 652.02

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Solution

The fourth proportional to 2,191.02, 3,287.10 and 652.02 is: 978.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.02 : 3,287.10 = 652.02 : x
  2. Step 2: Convert to fraction form
    2,191.02/3,287.10 = 652.02/x
  3. Step 3: Cross multiply
    2,191.02x = 3,287.10 × 652.02
  4. Step 4: Simplify right side
    2,191.02x = 2,143,254.94
  5. Step 5: Solve for x
    x = 2,143,254.94/2,191.02
  6. Step 6: Final answer
    x = 978.20

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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.