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Finding the Fourth Proportional to 8,690.41, 13,041.91 and 5,910.49

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Solution

The fourth proportional to 8,690.41, 13,041.91 and 5,910.49 is: 8,870.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,690.41 : 13,041.91 = 5,910.49 : x
  2. Step 2: Convert to fraction form
    8,690.41/13,041.91 = 5,910.49/x
  3. Step 3: Cross multiply
    8,690.41x = 13,041.91 × 5,910.49
  4. Step 4: Simplify right side
    8,690.41x = 77,084,078.64
  5. Step 5: Solve for x
    x = 77,084,078.64/8,690.41
  6. Step 6: Final answer
    x = 8,870.02

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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.