Home / 2,688.10-4,032.17-839.14

Finding the Fourth Proportional to 2,688.10, 4,032.17 and 839.14

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Solution

The fourth proportional to 2,688.10, 4,032.17 and 839.14 is: 1,258.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.10 : 4,032.17 = 839.14 : x
  2. Step 2: Convert to fraction form
    2,688.10/4,032.17 = 839.14/x
  3. Step 3: Cross multiply
    2,688.10x = 4,032.17 × 839.14
  4. Step 4: Simplify right side
    2,688.10x = 3,383,555.13
  5. Step 5: Solve for x
    x = 3,383,555.13/2,688.10
  6. Step 6: Final answer
    x = 1,258.72

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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.