Home / 3,452.55-4,766.76-2,128.20

Finding the Fourth Proportional to 3,452.55, 4,766.76 and 2,128.20

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Solution

The fourth proportional to 3,452.55, 4,766.76 and 2,128.20 is: 2,938.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,452.55 : 4,766.76 = 2,128.20 : x
  2. Step 2: Convert to fraction form
    3,452.55/4,766.76 = 2,128.20/x
  3. Step 3: Cross multiply
    3,452.55x = 4,766.76 × 2,128.20
  4. Step 4: Simplify right side
    3,452.55x = 10,144,618.63
  5. Step 5: Solve for x
    x = 10,144,618.63/3,452.55
  6. Step 6: Final answer
    x = 2,938.30

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.