Home / 3,774.40-5,645.60-3,387.20

Finding the Fourth Proportional to 3,774.40, 5,645.60 and 3,387.20

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Solution

The fourth proportional to 3,774.40, 5,645.60 and 3,387.20 is: 5,066.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,774.40 : 5,645.60 = 3,387.20 : x
  2. Step 2: Convert to fraction form
    3,774.40/5,645.60 = 3,387.20/x
  3. Step 3: Cross multiply
    3,774.40x = 5,645.60 × 3,387.20
  4. Step 4: Simplify right side
    3,774.40x = 19,122,776.32
  5. Step 5: Solve for x
    x = 19,122,776.32/3,774.40
  6. Step 6: Final answer
    x = 5,066.44

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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.