Home / 2,744.16-4,116.84-989.28

Finding the Fourth Proportional to 2,744.16, 4,116.84 and 989.28

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Solution

The fourth proportional to 2,744.16, 4,116.84 and 989.28 is: 1,484.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,744.16 : 4,116.84 = 989.28 : x
  2. Step 2: Convert to fraction form
    2,744.16/4,116.84 = 989.28/x
  3. Step 3: Cross multiply
    2,744.16x = 4,116.84 × 989.28
  4. Step 4: Simplify right side
    2,744.16x = 4,072,707.48
  5. Step 5: Solve for x
    x = 4,072,707.48/2,744.16
  6. Step 6: Final answer
    x = 1,484.14

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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.