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Finding the Fourth Proportional to 2,079.06, 3,119.18 and 618.24

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Solution

The fourth proportional to 2,079.06, 3,119.18 and 618.24 is: 927.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079.06 : 3,119.18 = 618.24 : x
  2. Step 2: Convert to fraction form
    2,079.06/3,119.18 = 618.24/x
  3. Step 3: Cross multiply
    2,079.06x = 3,119.18 × 618.24
  4. Step 4: Simplify right side
    2,079.06x = 1,928,401.84
  5. Step 5: Solve for x
    x = 1,928,401.84/2,079.06
  6. Step 6: Final answer
    x = 927.54

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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.