Home / 2,188.14-3,278.58-953.70

Finding the Fourth Proportional to 2,188.14, 3,278.58 and 953.70

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Solution

The fourth proportional to 2,188.14, 3,278.58 and 953.70 is: 1,428.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188.14 : 3,278.58 = 953.70 : x
  2. Step 2: Convert to fraction form
    2,188.14/3,278.58 = 953.70/x
  3. Step 3: Cross multiply
    2,188.14x = 3,278.58 × 953.70
  4. Step 4: Simplify right side
    2,188.14x = 3,126,781.75
  5. Step 5: Solve for x
    x = 3,126,781.75/2,188.14
  6. Step 6: Final answer
    x = 1,428.97

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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.