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Finding the Fourth Proportional to 2,187, 3,281.94 and 1,032.84

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Solution

The fourth proportional to 2,187, 3,281.94 and 1,032.84 is: 1,549.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187 : 3,281.94 = 1,032.84 : x
  2. Step 2: Convert to fraction form
    2,187/3,281.94 = 1,032.84/x
  3. Step 3: Cross multiply
    2,187x = 3,281.94 × 1,032.84
  4. Step 4: Simplify right side
    2,187x = 3,389,718.91
  5. Step 5: Solve for x
    x = 3,389,718.91/2,187
  6. Step 6: Final answer
    x = 1,549.94

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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.