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Finding the Fourth Proportional to 2,916.66, 4,396.98 and 2,728.74

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Solution

The fourth proportional to 2,916.66, 4,396.98 and 2,728.74 is: 4,113.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,916.66 : 4,396.98 = 2,728.74 : x
  2. Step 2: Convert to fraction form
    2,916.66/4,396.98 = 2,728.74/x
  3. Step 3: Cross multiply
    2,916.66x = 4,396.98 × 2,728.74
  4. Step 4: Simplify right side
    2,916.66x = 11,998,215.21
  5. Step 5: Solve for x
    x = 11,998,215.21/2,916.66
  6. Step 6: Final answer
    x = 4,113.68

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.