Home / 3,876.09-5,812.64-1,242.88

Finding the Fourth Proportional to 3,876.09, 5,812.64 and 1,242.88

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Solution

The fourth proportional to 3,876.09, 5,812.64 and 1,242.88 is: 1,863.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,876.09 : 5,812.64 = 1,242.88 : x
  2. Step 2: Convert to fraction form
    3,876.09/5,812.64 = 1,242.88/x
  3. Step 3: Cross multiply
    3,876.09x = 5,812.64 × 1,242.88
  4. Step 4: Simplify right side
    3,876.09x = 7,224,414.00
  5. Step 5: Solve for x
    x = 7,224,414.00/3,876.09
  6. Step 6: Final answer
    x = 1,863.84

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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.