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Finding the Fourth Proportional to 2,880.96, 4,319.22 and 932.64

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Solution

The fourth proportional to 2,880.96, 4,319.22 and 932.64 is: 1,398.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,880.96 : 4,319.22 = 932.64 : x
  2. Step 2: Convert to fraction form
    2,880.96/4,319.22 = 932.64/x
  3. Step 3: Cross multiply
    2,880.96x = 4,319.22 × 932.64
  4. Step 4: Simplify right side
    2,880.96x = 4,028,277.34
  5. Step 5: Solve for x
    x = 4,028,277.34/2,880.96
  6. Step 6: Final answer
    x = 1,398.24

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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.