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Finding the Fourth Proportional to 2,878.44, 4,318.36 and 930.64

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Solution

The fourth proportional to 2,878.44, 4,318.36 and 930.64 is: 1,396.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,878.44 : 4,318.36 = 930.64 : x
  2. Step 2: Convert to fraction form
    2,878.44/4,318.36 = 930.64/x
  3. Step 3: Cross multiply
    2,878.44x = 4,318.36 × 930.64
  4. Step 4: Simplify right side
    2,878.44x = 4,018,838.55
  5. Step 5: Solve for x
    x = 4,018,838.55/2,878.44
  6. Step 6: Final answer
    x = 1,396.19

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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.