Home / 3,867.12-5,333.40-3,167.28

Finding the Fourth Proportional to 3,867.12, 5,333.40 and 3,167.28

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Solution

The fourth proportional to 3,867.12, 5,333.40 and 3,167.28 is: 4,368.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,867.12 : 5,333.40 = 3,167.28 : x
  2. Step 2: Convert to fraction form
    3,867.12/5,333.40 = 3,167.28/x
  3. Step 3: Cross multiply
    3,867.12x = 5,333.40 × 3,167.28
  4. Step 4: Simplify right side
    3,867.12x = 16,892,371.15
  5. Step 5: Solve for x
    x = 16,892,371.15/3,867.12
  6. Step 6: Final answer
    x = 4,368.20

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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.