Home / 5,180.40-7,148.72-2,822.48

Finding the Fourth Proportional to 5,180.40, 7,148.72 and 2,822.48

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Solution

The fourth proportional to 5,180.40, 7,148.72 and 2,822.48 is: 3,894.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,180.40 : 7,148.72 = 2,822.48 : x
  2. Step 2: Convert to fraction form
    5,180.40/7,148.72 = 2,822.48/x
  3. Step 3: Cross multiply
    5,180.40x = 7,148.72 × 2,822.48
  4. Step 4: Simplify right side
    5,180.40x = 20,177,119.23
  5. Step 5: Solve for x
    x = 20,177,119.23/5,180.40
  6. Step 6: Final answer
    x = 3,894.90

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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.