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Finding the Fourth Proportional to 2,187.54, 3,281.58 and 888.84

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Solution

The fourth proportional to 2,187.54, 3,281.58 and 888.84 is: 1,333.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.54 : 3,281.58 = 888.84 : x
  2. Step 2: Convert to fraction form
    2,187.54/3,281.58 = 888.84/x
  3. Step 3: Cross multiply
    2,187.54x = 3,281.58 × 888.84
  4. Step 4: Simplify right side
    2,187.54x = 2,916,799.57
  5. Step 5: Solve for x
    x = 2,916,799.57/2,187.54
  6. Step 6: Final answer
    x = 1,333.37

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1.5x scale

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.