Home / 3,939.74-5,435.56-2,425.70

Finding the Fourth Proportional to 3,939.74, 5,435.56 and 2,425.70

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Solution

The fourth proportional to 3,939.74, 5,435.56 and 2,425.70 is: 3,346.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.74 : 5,435.56 = 2,425.70 : x
  2. Step 2: Convert to fraction form
    3,939.74/5,435.56 = 2,425.70/x
  3. Step 3: Cross multiply
    3,939.74x = 5,435.56 × 2,425.70
  4. Step 4: Simplify right side
    3,939.74x = 13,185,010.29
  5. Step 5: Solve for x
    x = 13,185,010.29/3,939.74
  6. Step 6: Final answer
    x = 3,346.67

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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.