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Finding the Fourth Proportional to 4,636, 6,397.74 and 2,540.20

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Solution

The fourth proportional to 4,636, 6,397.74 and 2,540.20 is: 3,505.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,636 : 6,397.74 = 2,540.20 : x
  2. Step 2: Convert to fraction form
    4,636/6,397.74 = 2,540.20/x
  3. Step 3: Cross multiply
    4,636x = 6,397.74 × 2,540.20
  4. Step 4: Simplify right side
    4,636x = 16,251,539.15
  5. Step 5: Solve for x
    x = 16,251,539.15/4,636
  6. Step 6: Final answer
    x = 3,505.51

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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.