Home / 5,378.67-7,422.75-3,021.12

Finding the Fourth Proportional to 5,378.67, 7,422.75 and 3,021.12

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Solution

The fourth proportional to 5,378.67, 7,422.75 and 3,021.12 is: 4,169.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,378.67 : 7,422.75 = 3,021.12 : x
  2. Step 2: Convert to fraction form
    5,378.67/7,422.75 = 3,021.12/x
  3. Step 3: Cross multiply
    5,378.67x = 7,422.75 × 3,021.12
  4. Step 4: Simplify right side
    5,378.67x = 22,425,018.48
  5. Step 5: Solve for x
    x = 22,425,018.48/5,378.67
  6. Step 6: Final answer
    x = 4,169.25

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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.