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Finding the Fourth Proportional to 8,937.92, 13,408.78 and 2,698.40

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Solution

The fourth proportional to 8,937.92, 13,408.78 and 2,698.40 is: 4,048.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,937.92 : 13,408.78 = 2,698.40 : x
  2. Step 2: Convert to fraction form
    8,937.92/13,408.78 = 2,698.40/x
  3. Step 3: Cross multiply
    8,937.92x = 13,408.78 × 2,698.40
  4. Step 4: Simplify right side
    8,937.92x = 36,182,251.95
  5. Step 5: Solve for x
    x = 36,182,251.95/8,937.92
  6. Step 6: Final answer
    x = 4,048.17

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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.