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Finding the Fourth Proportional to 2,469.77, 3,408.60 and 1,407.92

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Solution

The fourth proportional to 2,469.77, 3,408.60 and 1,407.92 is: 1,943.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,469.77 : 3,408.60 = 1,407.92 : x
  2. Step 2: Convert to fraction form
    2,469.77/3,408.60 = 1,407.92/x
  3. Step 3: Cross multiply
    2,469.77x = 3,408.60 × 1,407.92
  4. Step 4: Simplify right side
    2,469.77x = 4,799,019.07
  5. Step 5: Solve for x
    x = 4,799,019.07/2,469.77
  6. Step 6: Final answer
    x = 1,943.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.