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Finding the Fourth Proportional to 3,540.76, 4,886.22 and 2,215.18

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Solution

The fourth proportional to 3,540.76, 4,886.22 and 2,215.18 is: 3,056.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,540.76 : 4,886.22 = 2,215.18 : x
  2. Step 2: Convert to fraction form
    3,540.76/4,886.22 = 2,215.18/x
  3. Step 3: Cross multiply
    3,540.76x = 4,886.22 × 2,215.18
  4. Step 4: Simplify right side
    3,540.76x = 10,823,856.82
  5. Step 5: Solve for x
    x = 10,823,856.82/3,540.76
  6. Step 6: Final answer
    x = 3,056.93

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.