Home / 3,109.20-4,663.80-2,291.10

Finding the Fourth Proportional to 3,109.20, 4,663.80 and 2,291.10

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Solution

The fourth proportional to 3,109.20, 4,663.80 and 2,291.10 is: 3,436.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.20 : 4,663.80 = 2,291.10 : x
  2. Step 2: Convert to fraction form
    3,109.20/4,663.80 = 2,291.10/x
  3. Step 3: Cross multiply
    3,109.20x = 4,663.80 × 2,291.10
  4. Step 4: Simplify right side
    3,109.20x = 10,685,232.18
  5. Step 5: Solve for x
    x = 10,685,232.18/3,109.20
  6. Step 6: Final answer
    x = 3,436.65

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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.