Home / 3,117.24-4,292.60-2,785.55

Finding the Fourth Proportional to 3,117.24, 4,292.60 and 2,785.55

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Solution

The fourth proportional to 3,117.24, 4,292.60 and 2,785.55 is: 3,835.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.24 : 4,292.60 = 2,785.55 : x
  2. Step 2: Convert to fraction form
    3,117.24/4,292.60 = 2,785.55/x
  3. Step 3: Cross multiply
    3,117.24x = 4,292.60 × 2,785.55
  4. Step 4: Simplify right side
    3,117.24x = 11,957,216.54
  5. Step 5: Solve for x
    x = 11,957,216.54/3,117.24
  6. Step 6: Final answer
    x = 3,835.83

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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.