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Finding the Fourth Proportional to 2,578.07, 3,867.11 and 846.70

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Solution

The fourth proportional to 2,578.07, 3,867.11 and 846.70 is: 1,270.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,578.07 : 3,867.11 = 846.70 : x
  2. Step 2: Convert to fraction form
    2,578.07/3,867.11 = 846.70/x
  3. Step 3: Cross multiply
    2,578.07x = 3,867.11 × 846.70
  4. Step 4: Simplify right side
    2,578.07x = 3,274,282.04
  5. Step 5: Solve for x
    x = 3,274,282.04/2,578.07
  6. Step 6: Final answer
    x = 1,270.05

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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.