Home / 4,938.40-7,398.60-3,905.20

Finding the Fourth Proportional to 4,938.40, 7,398.60 and 3,905.20

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Solution

The fourth proportional to 4,938.40, 7,398.60 and 3,905.20 is: 5,850.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,938.40 : 7,398.60 = 3,905.20 : x
  2. Step 2: Convert to fraction form
    4,938.40/7,398.60 = 3,905.20/x
  3. Step 3: Cross multiply
    4,938.40x = 7,398.60 × 3,905.20
  4. Step 4: Simplify right side
    4,938.40x = 28,893,012.72
  5. Step 5: Solve for x
    x = 28,893,012.72/4,938.40
  6. Step 6: Final answer
    x = 5,850.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.