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Finding the Fourth Proportional to 5,408.73, 7,463.51 and 3,139.72

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Solution

The fourth proportional to 5,408.73, 7,463.51 and 3,139.72 is: 4,332.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,408.73 : 7,463.51 = 3,139.72 : x
  2. Step 2: Convert to fraction form
    5,408.73/7,463.51 = 3,139.72/x
  3. Step 3: Cross multiply
    5,408.73x = 7,463.51 × 3,139.72
  4. Step 4: Simplify right side
    5,408.73x = 23,433,297.26
  5. Step 5: Solve for x
    x = 23,433,297.26/5,408.73
  6. Step 6: Final answer
    x = 4,332.50

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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.