Home / 3,970.49-5,479.09-2,202.08

Finding the Fourth Proportional to 3,970.49, 5,479.09 and 2,202.08

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Solution

The fourth proportional to 3,970.49, 5,479.09 and 2,202.08 is: 3,038.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.49 : 5,479.09 = 2,202.08 : x
  2. Step 2: Convert to fraction form
    3,970.49/5,479.09 = 2,202.08/x
  3. Step 3: Cross multiply
    3,970.49x = 5,479.09 × 2,202.08
  4. Step 4: Simplify right side
    3,970.49x = 12,065,361.61
  5. Step 5: Solve for x
    x = 12,065,361.61/3,970.49
  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.