Home / 2,118.24-3,177.48-731.64

Finding the Fourth Proportional to 2,118.24, 3,177.48 and 731.64

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Solution

The fourth proportional to 2,118.24, 3,177.48 and 731.64 is: 1,097.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118.24 : 3,177.48 = 731.64 : x
  2. Step 2: Convert to fraction form
    2,118.24/3,177.48 = 731.64/x
  3. Step 3: Cross multiply
    2,118.24x = 3,177.48 × 731.64
  4. Step 4: Simplify right side
    2,118.24x = 2,324,771.47
  5. Step 5: Solve for x
    x = 2,324,771.47/2,118.24
  6. Step 6: Final answer
    x = 1,097.50

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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.