Home / 3,908.56-5,393.87-2,140.13

Finding the Fourth Proportional to 3,908.56, 5,393.87 and 2,140.13

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Solution

The fourth proportional to 3,908.56, 5,393.87 and 2,140.13 is: 2,953.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,908.56 : 5,393.87 = 2,140.13 : x
  2. Step 2: Convert to fraction form
    3,908.56/5,393.87 = 2,140.13/x
  3. Step 3: Cross multiply
    3,908.56x = 5,393.87 × 2,140.13
  4. Step 4: Simplify right side
    3,908.56x = 11,543,583.00
  5. Step 5: Solve for x
    x = 11,543,583.00/3,908.56
  6. Step 6: Final answer
    x = 2,953.41

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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.