Home / 7,422.84-11,142.36-5,579.28

Finding the Fourth Proportional to 7,422.84, 11,142.36 and 5,579.28

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Solution

The fourth proportional to 7,422.84, 11,142.36 and 5,579.28 is: 8,375.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,422.84 : 11,142.36 = 5,579.28 : x
  2. Step 2: Convert to fraction form
    7,422.84/11,142.36 = 5,579.28/x
  3. Step 3: Cross multiply
    7,422.84x = 11,142.36 × 5,579.28
  4. Step 4: Simplify right side
    7,422.84x = 62,166,346.30
  5. Step 5: Solve for x
    x = 62,166,346.30/7,422.84
  6. Step 6: Final answer
    x = 8,375.01

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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.