Home / 7,028.02-9,689.79-5,138.02

Finding the Fourth Proportional to 7,028.02, 9,689.79 and 5,138.02

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Solution

The fourth proportional to 7,028.02, 9,689.79 and 5,138.02 is: 7,083.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,028.02 : 9,689.79 = 5,138.02 : x
  2. Step 2: Convert to fraction form
    7,028.02/9,689.79 = 5,138.02/x
  3. Step 3: Cross multiply
    7,028.02x = 9,689.79 × 5,138.02
  4. Step 4: Simplify right side
    7,028.02x = 49,786,334.82
  5. Step 5: Solve for x
    x = 49,786,334.82/7,028.02
  6. Step 6: Final answer
    x = 7,083.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.