Home / 3,308.70-4,565.36-2,129.60

Finding the Fourth Proportional to 3,308.70, 4,565.36 and 2,129.60

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Solution

The fourth proportional to 3,308.70, 4,565.36 and 2,129.60 is: 2,938.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,308.70 : 4,565.36 = 2,129.60 : x
  2. Step 2: Convert to fraction form
    3,308.70/4,565.36 = 2,129.60/x
  3. Step 3: Cross multiply
    3,308.70x = 4,565.36 × 2,129.60
  4. Step 4: Simplify right side
    3,308.70x = 9,722,390.66
  5. Step 5: Solve for x
    x = 9,722,390.66/3,308.70
  6. Step 6: Final answer
    x = 2,938.43

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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.