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Finding the Fourth Proportional to 2,188.82, 3,281.39 and 955.29

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Solution

The fourth proportional to 2,188.82, 3,281.39 and 955.29 is: 1,432.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188.82 : 3,281.39 = 955.29 : x
  2. Step 2: Convert to fraction form
    2,188.82/3,281.39 = 955.29/x
  3. Step 3: Cross multiply
    2,188.82x = 3,281.39 × 955.29
  4. Step 4: Simplify right side
    2,188.82x = 3,134,679.05
  5. Step 5: Solve for x
    x = 3,134,679.05/2,188.82
  6. Step 6: Final answer
    x = 1,432.14

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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.