Home / 7,320.88-10,981.32-3,428.02

Finding the Fourth Proportional to 7,320.88, 10,981.32 and 3,428.02

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Solution

The fourth proportional to 7,320.88, 10,981.32 and 3,428.02 is: 5,142.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,320.88 : 10,981.32 = 3,428.02 : x
  2. Step 2: Convert to fraction form
    7,320.88/10,981.32 = 3,428.02/x
  3. Step 3: Cross multiply
    7,320.88x = 10,981.32 × 3,428.02
  4. Step 4: Simplify right side
    7,320.88x = 37,644,184.59
  5. Step 5: Solve for x
    x = 37,644,184.59/7,320.88
  6. Step 6: Final answer
    x = 5,142.03

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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.