Home / 3,431.08-5,133.66-2,688.04

Finding the Fourth Proportional to 3,431.08, 5,133.66 and 2,688.04

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Solution

The fourth proportional to 3,431.08, 5,133.66 and 2,688.04 is: 4,021.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.08 : 5,133.66 = 2,688.04 : x
  2. Step 2: Convert to fraction form
    3,431.08/5,133.66 = 2,688.04/x
  3. Step 3: Cross multiply
    3,431.08x = 5,133.66 × 2,688.04
  4. Step 4: Simplify right side
    3,431.08x = 13,799,483.43
  5. Step 5: Solve for x
    x = 13,799,483.43/3,431.08
  6. Step 6: Final answer
    x = 4,021.91

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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.