Home / 2,445.90-3,668.85-2,129.10

Finding the Fourth Proportional to 2,445.90, 3,668.85 and 2,129.10

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Solution

The fourth proportional to 2,445.90, 3,668.85 and 2,129.10 is: 3,193.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,445.90 : 3,668.85 = 2,129.10 : x
  2. Step 2: Convert to fraction form
    2,445.90/3,668.85 = 2,129.10/x
  3. Step 3: Cross multiply
    2,445.90x = 3,668.85 × 2,129.10
  4. Step 4: Simplify right side
    2,445.90x = 7,811,348.54
  5. Step 5: Solve for x
    x = 7,811,348.54/2,445.90
  6. Step 6: Final answer
    x = 3,193.65

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Half scale
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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.