Home / 3,981.29-5,969.87-1,788.14

Finding the Fourth Proportional to 3,981.29, 5,969.87 and 1,788.14

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Solution

The fourth proportional to 3,981.29, 5,969.87 and 1,788.14 is: 2,681.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.29 : 5,969.87 = 1,788.14 : x
  2. Step 2: Convert to fraction form
    3,981.29/5,969.87 = 1,788.14/x
  3. Step 3: Cross multiply
    3,981.29x = 5,969.87 × 1,788.14
  4. Step 4: Simplify right side
    3,981.29x = 10,674,963.34
  5. Step 5: Solve for x
    x = 10,674,963.34/3,981.29
  6. Step 6: Final answer
    x = 2,681.28

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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.