Home / 3,728.61-5,145.97-2,406.16

Finding the Fourth Proportional to 3,728.61, 5,145.97 and 2,406.16

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Solution

The fourth proportional to 3,728.61, 5,145.97 and 2,406.16 is: 3,320.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,728.61 : 5,145.97 = 2,406.16 : x
  2. Step 2: Convert to fraction form
    3,728.61/5,145.97 = 2,406.16/x
  3. Step 3: Cross multiply
    3,728.61x = 5,145.97 × 2,406.16
  4. Step 4: Simplify right side
    3,728.61x = 12,382,027.18
  5. Step 5: Solve for x
    x = 12,382,027.18/3,728.61
  6. Step 6: Final answer
    x = 3,320.82

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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.