Home / 2,117.27-3,176.21-656.54

Finding the Fourth Proportional to 2,117.27, 3,176.21 and 656.54

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Solution

The fourth proportional to 2,117.27, 3,176.21 and 656.54 is: 984.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117.27 : 3,176.21 = 656.54 : x
  2. Step 2: Convert to fraction form
    2,117.27/3,176.21 = 656.54/x
  3. Step 3: Cross multiply
    2,117.27x = 3,176.21 × 656.54
  4. Step 4: Simplify right side
    2,117.27x = 2,085,289.75
  5. Step 5: Solve for x
    x = 2,085,289.75/2,117.27
  6. Step 6: Final answer
    x = 984.90

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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.