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Finding the Fourth Proportional to 2,192.47, 3,287.10 and 875.82

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Solution

The fourth proportional to 2,192.47, 3,287.10 and 875.82 is: 1,313.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,192.47 : 3,287.10 = 875.82 : x
  2. Step 2: Convert to fraction form
    2,192.47/3,287.10 = 875.82/x
  3. Step 3: Cross multiply
    2,192.47x = 3,287.10 × 875.82
  4. Step 4: Simplify right side
    2,192.47x = 2,878,923.53
  5. Step 5: Solve for x
    x = 2,878,923.53/2,192.47
  6. Step 6: Final answer
    x = 1,313.10

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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.