Home / 5,138.09-7,711.51-2,020.28

Finding the Fourth Proportional to 5,138.09, 7,711.51 and 2,020.28

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Solution

The fourth proportional to 5,138.09, 7,711.51 and 2,020.28 is: 3,032.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.09 : 7,711.51 = 2,020.28 : x
  2. Step 2: Convert to fraction form
    5,138.09/7,711.51 = 2,020.28/x
  3. Step 3: Cross multiply
    5,138.09x = 7,711.51 × 2,020.28
  4. Step 4: Simplify right side
    5,138.09x = 15,579,409.42
  5. Step 5: Solve for x
    x = 15,579,409.42/5,138.09
  6. Step 6: Final answer
    x = 3,032.14

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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.