Home / 3,505.40-5,245.97-2,170.64

Finding the Fourth Proportional to 3,505.40, 5,245.97 and 2,170.64

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Solution

The fourth proportional to 3,505.40, 5,245.97 and 2,170.64 is: 3,248.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,505.40 : 5,245.97 = 2,170.64 : x
  2. Step 2: Convert to fraction form
    3,505.40/5,245.97 = 2,170.64/x
  3. Step 3: Cross multiply
    3,505.40x = 5,245.97 × 2,170.64
  4. Step 4: Simplify right side
    3,505.40x = 11,387,130.86
  5. Step 5: Solve for x
    x = 11,387,130.86/3,505.40
  6. Step 6: Final answer
    x = 3,248.45

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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.