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Finding the Fourth Proportional to 4,938.60, 7,405.20 and 2,013.60

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Solution

The fourth proportional to 4,938.60, 7,405.20 and 2,013.60 is: 3,019.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,938.60 : 7,405.20 = 2,013.60 : x
  2. Step 2: Convert to fraction form
    4,938.60/7,405.20 = 2,013.60/x
  3. Step 3: Cross multiply
    4,938.60x = 7,405.20 × 2,013.60
  4. Step 4: Simplify right side
    4,938.60x = 14,911,110.72
  5. Step 5: Solve for x
    x = 14,911,110.72/4,938.60
  6. Step 6: Final answer
    x = 3,019.30

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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.