Home / 3,871.09-5,807.64-1,680.24

Finding the Fourth Proportional to 3,871.09, 5,807.64 and 1,680.24

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Solution

The fourth proportional to 3,871.09, 5,807.64 and 1,680.24 is: 2,520.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.09 : 5,807.64 = 1,680.24 : x
  2. Step 2: Convert to fraction form
    3,871.09/5,807.64 = 1,680.24/x
  3. Step 3: Cross multiply
    3,871.09x = 5,807.64 × 1,680.24
  4. Step 4: Simplify right side
    3,871.09x = 9,758,229.03
  5. Step 5: Solve for x
    x = 9,758,229.03/3,871.09
  6. Step 6: Final answer
    x = 2,520.80

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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.