Home / 2,639.90-3,961.74-1,180.14

Finding the Fourth Proportional to 2,639.90, 3,961.74 and 1,180.14

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Solution

The fourth proportional to 2,639.90, 3,961.74 and 1,180.14 is: 1,771.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.90 : 3,961.74 = 1,180.14 : x
  2. Step 2: Convert to fraction form
    2,639.90/3,961.74 = 1,180.14/x
  3. Step 3: Cross multiply
    2,639.90x = 3,961.74 × 1,180.14
  4. Step 4: Simplify right side
    2,639.90x = 4,675,407.84
  5. Step 5: Solve for x
    x = 4,675,407.84/2,639.90
  6. Step 6: Final answer
    x = 1,771.05

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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.