Home / 3,981.60-5,968.08-2,031.12

Finding the Fourth Proportional to 3,981.60, 5,968.08 and 2,031.12

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Solution

The fourth proportional to 3,981.60, 5,968.08 and 2,031.12 is: 3,044.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.60 : 5,968.08 = 2,031.12 : x
  2. Step 2: Convert to fraction form
    3,981.60/5,968.08 = 2,031.12/x
  3. Step 3: Cross multiply
    3,981.60x = 5,968.08 × 2,031.12
  4. Step 4: Simplify right side
    3,981.60x = 12,121,886.65
  5. Step 5: Solve for x
    x = 12,121,886.65/3,981.60
  6. Step 6: Final answer
    x = 3,044.48

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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.