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Finding the Fourth Proportional to 2,688.63, 4,032.96 and 957.25

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Solution

The fourth proportional to 2,688.63, 4,032.96 and 957.25 is: 1,435.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.63 : 4,032.96 = 957.25 : x
  2. Step 2: Convert to fraction form
    2,688.63/4,032.96 = 957.25/x
  3. Step 3: Cross multiply
    2,688.63x = 4,032.96 × 957.25
  4. Step 4: Simplify right side
    2,688.63x = 3,860,550.96
  5. Step 5: Solve for x
    x = 3,860,550.96/2,688.63
  6. Step 6: Final answer
    x = 1,435.88

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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.