Home / 5,180.20-7,148.86-2,822.50

Finding the Fourth Proportional to 5,180.20, 7,148.86 and 2,822.50

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Solution

The fourth proportional to 5,180.20, 7,148.86 and 2,822.50 is: 3,895.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,180.20 : 7,148.86 = 2,822.50 : x
  2. Step 2: Convert to fraction form
    5,180.20/7,148.86 = 2,822.50/x
  3. Step 3: Cross multiply
    5,180.20x = 7,148.86 × 2,822.50
  4. Step 4: Simplify right side
    5,180.20x = 20,177,619.02
  5. Step 5: Solve for x
    x = 20,177,619.02/5,180.20
  6. Step 6: Final answer
    x = 3,895.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.