Home / 5,378.44-7,422.40-3,020.76

Finding the Fourth Proportional to 5,378.44, 7,422.40 and 3,020.76

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Solution

The fourth proportional to 5,378.44, 7,422.40 and 3,020.76 is: 4,168.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,378.44 : 7,422.40 = 3,020.76 : x
  2. Step 2: Convert to fraction form
    5,378.44/7,422.40 = 3,020.76/x
  3. Step 3: Cross multiply
    5,378.44x = 7,422.40 × 3,020.76
  4. Step 4: Simplify right side
    5,378.44x = 22,421,289.02
  5. Step 5: Solve for x
    x = 22,421,289.02/5,378.44
  6. Step 6: Final answer
    x = 4,168.73

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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.