Home / 3,728.02-5,142.54-2,311.06

Finding the Fourth Proportional to 3,728.02, 5,142.54 and 2,311.06

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Solution

The fourth proportional to 3,728.02, 5,142.54 and 2,311.06 is: 3,187.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,728.02 : 5,142.54 = 2,311.06 : x
  2. Step 2: Convert to fraction form
    3,728.02/5,142.54 = 2,311.06/x
  3. Step 3: Cross multiply
    3,728.02x = 5,142.54 × 2,311.06
  4. Step 4: Simplify right side
    3,728.02x = 11,884,718.49
  5. Step 5: Solve for x
    x = 11,884,718.49/3,728.02
  6. Step 6: Final answer
    x = 3,187.94

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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.