Home / 3,970.26-5,478.94-2,202.12

Finding the Fourth Proportional to 3,970.26, 5,478.94 and 2,202.12

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Solution

The fourth proportional to 3,970.26, 5,478.94 and 2,202.12 is: 3,038.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.26 : 5,478.94 = 2,202.12 : x
  2. Step 2: Convert to fraction form
    3,970.26/5,478.94 = 2,202.12/x
  3. Step 3: Cross multiply
    3,970.26x = 5,478.94 × 2,202.12
  4. Step 4: Simplify right side
    3,970.26x = 12,065,283.35
  5. Step 5: Solve for x
    x = 12,065,283.35/3,970.26
  6. Step 6: Final answer
    x = 3,038.92

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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.