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Finding the Fourth Proportional to 2,989.11, 4,483.71 and 798.15

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Solution

The fourth proportional to 2,989.11, 4,483.71 and 798.15 is: 1,197.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.11 : 4,483.71 = 798.15 : x
  2. Step 2: Convert to fraction form
    2,989.11/4,483.71 = 798.15/x
  3. Step 3: Cross multiply
    2,989.11x = 4,483.71 × 798.15
  4. Step 4: Simplify right side
    2,989.11x = 3,578,673.14
  5. Step 5: Solve for x
    x = 3,578,673.14/2,989.11
  6. Step 6: Final answer
    x = 1,197.24

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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.