Home / 5,422.75-7,483.40-2,938.75

Finding the Fourth Proportional to 5,422.75, 7,483.40 and 2,938.75

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Solution

The fourth proportional to 5,422.75, 7,483.40 and 2,938.75 is: 4,055.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,422.75 : 7,483.40 = 2,938.75 : x
  2. Step 2: Convert to fraction form
    5,422.75/7,483.40 = 2,938.75/x
  3. Step 3: Cross multiply
    5,422.75x = 7,483.40 × 2,938.75
  4. Step 4: Simplify right side
    5,422.75x = 21,991,841.75
  5. Step 5: Solve for x
    x = 21,991,841.75/5,422.75
  6. Step 6: Final answer
    x = 4,055.48

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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.