Home / 5,538.60-8,320.70-3,810.60

Finding the Fourth Proportional to 5,538.60, 8,320.70 and 3,810.60

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Solution

The fourth proportional to 5,538.60, 8,320.70 and 3,810.60 is: 5,724.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,538.60 : 8,320.70 = 3,810.60 : x
  2. Step 2: Convert to fraction form
    5,538.60/8,320.70 = 3,810.60/x
  3. Step 3: Cross multiply
    5,538.60x = 8,320.70 × 3,810.60
  4. Step 4: Simplify right side
    5,538.60x = 31,706,859.42
  5. Step 5: Solve for x
    x = 31,706,859.42/5,538.60
  6. Step 6: Final answer
    x = 5,724.71

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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.