Home / 3,971-5,479.98-2,202.72

Finding the Fourth Proportional to 3,971, 5,479.98 and 2,202.72

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Solution

The fourth proportional to 3,971, 5,479.98 and 2,202.72 is: 3,039.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,971 : 5,479.98 = 2,202.72 : x
  2. Step 2: Convert to fraction form
    3,971/5,479.98 = 2,202.72/x
  3. Step 3: Cross multiply
    3,971x = 5,479.98 × 2,202.72
  4. Step 4: Simplify right side
    3,971x = 12,070,861.55
  5. Step 5: Solve for x
    x = 12,070,861.55/3,971
  6. Step 6: Final answer
    x = 3,039.75

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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.