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Finding the Fourth Proportional to 2,008.92, 3,013.38 and 776.40

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Solution

The fourth proportional to 2,008.92, 3,013.38 and 776.40 is: 1,164.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,008.92 : 3,013.38 = 776.40 : x
  2. Step 2: Convert to fraction form
    2,008.92/3,013.38 = 776.40/x
  3. Step 3: Cross multiply
    2,008.92x = 3,013.38 × 776.40
  4. Step 4: Simplify right side
    2,008.92x = 2,339,588.23
  5. Step 5: Solve for x
    x = 2,339,588.23/2,008.92
  6. Step 6: Final answer
    x = 1,164.60

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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.