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Finding the Fourth Proportional to 3,390.62, 4,680.48 and 2,064.80

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Solution

The fourth proportional to 3,390.62, 4,680.48 and 2,064.80 is: 2,850.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.62 : 4,680.48 = 2,064.80 : x
  2. Step 2: Convert to fraction form
    3,390.62/4,680.48 = 2,064.80/x
  3. Step 3: Cross multiply
    3,390.62x = 4,680.48 × 2,064.80
  4. Step 4: Simplify right side
    3,390.62x = 9,664,255.10
  5. Step 5: Solve for x
    x = 9,664,255.10/3,390.62
  6. Step 6: Final answer
    x = 2,850.29

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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.