Home / 5,178.68-7,146.82-3,408.92

Finding the Fourth Proportional to 5,178.68, 7,146.82 and 3,408.92

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Solution

The fourth proportional to 5,178.68, 7,146.82 and 3,408.92 is: 4,704.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.68 : 7,146.82 = 3,408.92 : x
  2. Step 2: Convert to fraction form
    5,178.68/7,146.82 = 3,408.92/x
  3. Step 3: Cross multiply
    5,178.68x = 7,146.82 × 3,408.92
  4. Step 4: Simplify right side
    5,178.68x = 24,362,937.63
  5. Step 5: Solve for x
    x = 24,362,937.63/5,178.68
  6. Step 6: Final answer
    x = 4,704.47

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Half scale
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Double scale
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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.