Home / 3,871.36-5,807.94-1,274.20

Finding the Fourth Proportional to 3,871.36, 5,807.94 and 1,274.20

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Solution

The fourth proportional to 3,871.36, 5,807.94 and 1,274.20 is: 1,911.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.36 : 5,807.94 = 1,274.20 : x
  2. Step 2: Convert to fraction form
    3,871.36/5,807.94 = 1,274.20/x
  3. Step 3: Cross multiply
    3,871.36x = 5,807.94 × 1,274.20
  4. Step 4: Simplify right side
    3,871.36x = 7,400,477.15
  5. Step 5: Solve for x
    x = 7,400,477.15/3,871.36
  6. Step 6: Final answer
    x = 1,911.60

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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.