Home / 3,968.40-5,476.45-2,176.05

Finding the Fourth Proportional to 3,968.40, 5,476.45 and 2,176.05

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Solution

The fourth proportional to 3,968.40, 5,476.45 and 2,176.05 is: 3,002.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,968.40 : 5,476.45 = 2,176.05 : x
  2. Step 2: Convert to fraction form
    3,968.40/5,476.45 = 2,176.05/x
  3. Step 3: Cross multiply
    3,968.40x = 5,476.45 × 2,176.05
  4. Step 4: Simplify right side
    3,968.40x = 11,917,023.58
  5. Step 5: Solve for x
    x = 11,917,023.58/3,968.40
  6. Step 6: Final answer
    x = 3,002.98

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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.