Home / 2,625.75-3,938.67-1,240.20

Finding the Fourth Proportional to 2,625.75, 3,938.67 and 1,240.20

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Solution

The fourth proportional to 2,625.75, 3,938.67 and 1,240.20 is: 1,860.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,625.75 : 3,938.67 = 1,240.20 : x
  2. Step 2: Convert to fraction form
    2,625.75/3,938.67 = 1,240.20/x
  3. Step 3: Cross multiply
    2,625.75x = 3,938.67 × 1,240.20
  4. Step 4: Simplify right side
    2,625.75x = 4,884,738.53
  5. Step 5: Solve for x
    x = 4,884,738.53/2,625.75
  6. Step 6: Final answer
    x = 1,860.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.