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Finding the Fourth Proportional to 8,768, 13,154.28 and 2,612

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Solution

The fourth proportional to 8,768, 13,154.28 and 2,612 is: 3,918.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,768 : 13,154.28 = 2,612 : x
  2. Step 2: Convert to fraction form
    8,768/13,154.28 = 2,612/x
  3. Step 3: Cross multiply
    8,768x = 13,154.28 × 2,612
  4. Step 4: Simplify right side
    8,768x = 34,358,979.36
  5. Step 5: Solve for x
    x = 34,358,979.36/8,768
  6. Step 6: Final answer
    x = 3,918.68

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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.