Home / 3,138.19-4,326.08-2,390.85

Finding the Fourth Proportional to 3,138.19, 4,326.08 and 2,390.85

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Solution

The fourth proportional to 3,138.19, 4,326.08 and 2,390.85 is: 3,295.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.19 : 4,326.08 = 2,390.85 : x
  2. Step 2: Convert to fraction form
    3,138.19/4,326.08 = 2,390.85/x
  3. Step 3: Cross multiply
    3,138.19x = 4,326.08 × 2,390.85
  4. Step 4: Simplify right side
    3,138.19x = 10,343,034.84
  5. Step 5: Solve for x
    x = 10,343,034.84/3,138.19
  6. Step 6: Final answer
    x = 3,295.86

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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.