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Finding the Fourth Proportional to 4,645.44, 6,408 and 2,989.44

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Solution

The fourth proportional to 4,645.44, 6,408 and 2,989.44 is: 4,123.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,645.44 : 6,408 = 2,989.44 : x
  2. Step 2: Convert to fraction form
    4,645.44/6,408 = 2,989.44/x
  3. Step 3: Cross multiply
    4,645.44x = 6,408 × 2,989.44
  4. Step 4: Simplify right side
    4,645.44x = 19,156,331.52
  5. Step 5: Solve for x
    x = 19,156,331.52/4,645.44
  6. Step 6: Final answer
    x = 4,123.69

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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.