Home / 3,970.40-5,479.07-2,202.03

Finding the Fourth Proportional to 3,970.40, 5,479.07 and 2,202.03

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Solution

The fourth proportional to 3,970.40, 5,479.07 and 2,202.03 is: 3,038.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.40 : 5,479.07 = 2,202.03 : x
  2. Step 2: Convert to fraction form
    3,970.40/5,479.07 = 2,202.03/x
  3. Step 3: Cross multiply
    3,970.40x = 5,479.07 × 2,202.03
  4. Step 4: Simplify right side
    3,970.40x = 12,065,065.50
  5. Step 5: Solve for x
    x = 12,065,065.50/3,970.40
  6. Step 6: Final answer
    x = 3,038.76

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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.