Home / 3,480.39-5,220.45-1,505.75

Finding the Fourth Proportional to 3,480.39, 5,220.45 and 1,505.75

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Solution

The fourth proportional to 3,480.39, 5,220.45 and 1,505.75 is: 2,258.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,480.39 : 5,220.45 = 1,505.75 : x
  2. Step 2: Convert to fraction form
    3,480.39/5,220.45 = 1,505.75/x
  3. Step 3: Cross multiply
    3,480.39x = 5,220.45 × 1,505.75
  4. Step 4: Simplify right side
    3,480.39x = 7,860,666.49
  5. Step 5: Solve for x
    x = 7,860,666.49/3,480.39
  6. Step 6: Final answer
    x = 2,258.56

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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.