Home / 7,220.40-10,838.70-5,584.20

Finding the Fourth Proportional to 7,220.40, 10,838.70 and 5,584.20

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Solution

The fourth proportional to 7,220.40, 10,838.70 and 5,584.20 is: 8,382.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,220.40 : 10,838.70 = 5,584.20 : x
  2. Step 2: Convert to fraction form
    7,220.40/10,838.70 = 5,584.20/x
  3. Step 3: Cross multiply
    7,220.40x = 10,838.70 × 5,584.20
  4. Step 4: Simplify right side
    7,220.40x = 60,525,468.54
  5. Step 5: Solve for x
    x = 60,525,468.54/7,220.40
  6. Step 6: Final answer
    x = 8,382.56

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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.