Home / 3,969.73-5,478.00-2,176.88

Finding the Fourth Proportional to 3,969.73, 5,478.00 and 2,176.88

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Solution

The fourth proportional to 3,969.73, 5,478.00 and 2,176.88 is: 3,003.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,969.73 : 5,478.00 = 2,176.88 : x
  2. Step 2: Convert to fraction form
    3,969.73/5,478.00 = 2,176.88/x
  3. Step 3: Cross multiply
    3,969.73x = 5,478.00 × 2,176.88
  4. Step 4: Simplify right side
    3,969.73x = 11,924,931.45
  5. Step 5: Solve for x
    x = 11,924,931.45/3,969.73
  6. Step 6: Final answer
    x = 3,003.96

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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.