Home / 7,943.28-11,911.20-2,395.20

Finding the Fourth Proportional to 7,943.28, 11,911.20 and 2,395.20

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Solution

The fourth proportional to 7,943.28, 11,911.20 and 2,395.20 is: 3,591.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,943.28 : 11,911.20 = 2,395.20 : x
  2. Step 2: Convert to fraction form
    7,943.28/11,911.20 = 2,395.20/x
  3. Step 3: Cross multiply
    7,943.28x = 11,911.20 × 2,395.20
  4. Step 4: Simplify right side
    7,943.28x = 28,529,706.24
  5. Step 5: Solve for x
    x = 28,529,706.24/7,943.28
  6. Step 6: Final answer
    x = 3,591.68

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1.5x scale

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.