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Finding the Fourth Proportional to 3,408.99, 4,704.30 and 1,916.97

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Solution

The fourth proportional to 3,408.99, 4,704.30 and 1,916.97 is: 2,645.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,408.99 : 4,704.30 = 1,916.97 : x
  2. Step 2: Convert to fraction form
    3,408.99/4,704.30 = 1,916.97/x
  3. Step 3: Cross multiply
    3,408.99x = 4,704.30 × 1,916.97
  4. Step 4: Simplify right side
    3,408.99x = 9,018,001.97
  5. Step 5: Solve for x
    x = 9,018,001.97/3,408.99
  6. Step 6: Final answer
    x = 2,645.36

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1.5x scale

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.