Home / 2,217.78-3,314.40-2,089.75

Finding the Fourth Proportional to 2,217.78, 3,314.40 and 2,089.75

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Solution

The fourth proportional to 2,217.78, 3,314.40 and 2,089.75 is: 3,123.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.78 : 3,314.40 = 2,089.75 : x
  2. Step 2: Convert to fraction form
    2,217.78/3,314.40 = 2,089.75/x
  3. Step 3: Cross multiply
    2,217.78x = 3,314.40 × 2,089.75
  4. Step 4: Simplify right side
    2,217.78x = 6,926,250.83
  5. Step 5: Solve for x
    x = 6,926,250.83/2,217.78
  6. Step 6: Final answer
    x = 3,123.06

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.