Home / 7,125.49-10,690.56-3,428.02

Finding the Fourth Proportional to 7,125.49, 10,690.56 and 3,428.02

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Solution

The fourth proportional to 7,125.49, 10,690.56 and 3,428.02 is: 5,143.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,125.49 : 10,690.56 = 3,428.02 : x
  2. Step 2: Convert to fraction form
    7,125.49/10,690.56 = 3,428.02/x
  3. Step 3: Cross multiply
    7,125.49x = 10,690.56 × 3,428.02
  4. Step 4: Simplify right side
    7,125.49x = 36,647,453.49
  5. Step 5: Solve for x
    x = 36,647,453.49/7,125.49
  6. Step 6: Final answer
    x = 5,143.15

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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.