Home / 3,207.70-4,811.55-1,971.10

Finding the Fourth Proportional to 3,207.70, 4,811.55 and 1,971.10

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Solution

The fourth proportional to 3,207.70, 4,811.55 and 1,971.10 is: 2,956.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,207.70 : 4,811.55 = 1,971.10 : x
  2. Step 2: Convert to fraction form
    3,207.70/4,811.55 = 1,971.10/x
  3. Step 3: Cross multiply
    3,207.70x = 4,811.55 × 1,971.10
  4. Step 4: Simplify right side
    3,207.70x = 9,484,046.21
  5. Step 5: Solve for x
    x = 9,484,046.21/3,207.70
  6. Step 6: Final answer
    x = 2,956.65

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Similar ratio
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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.