Home / 3,981.60-5,971.44-1,670.88

Finding the Fourth Proportional to 3,981.60, 5,971.44 and 1,670.88

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Solution

The fourth proportional to 3,981.60, 5,971.44 and 1,670.88 is: 2,505.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.60 : 5,971.44 = 1,670.88 : x
  2. Step 2: Convert to fraction form
    3,981.60/5,971.44 = 1,670.88/x
  3. Step 3: Cross multiply
    3,981.60x = 5,971.44 × 1,670.88
  4. Step 4: Simplify right side
    3,981.60x = 9,977,559.67
  5. Step 5: Solve for x
    x = 9,977,559.67/3,981.60
  6. Step 6: Final answer
    x = 2,505.92

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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.