Home / 3,728.36-5,145.28-2,135.26

Finding the Fourth Proportional to 3,728.36, 5,145.28 and 2,135.26

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Solution

The fourth proportional to 3,728.36, 5,145.28 and 2,135.26 is: 2,946.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,728.36 : 5,145.28 = 2,135.26 : x
  2. Step 2: Convert to fraction form
    3,728.36/5,145.28 = 2,135.26/x
  3. Step 3: Cross multiply
    3,728.36x = 5,145.28 × 2,135.26
  4. Step 4: Simplify right side
    3,728.36x = 10,986,510.57
  5. Step 5: Solve for x
    x = 10,986,510.57/3,728.36
  6. Step 6: Final answer
    x = 2,946.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.