Home / 3,970.43-5,478.69-2,202.02

Finding the Fourth Proportional to 3,970.43, 5,478.69 and 2,202.02

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Solution

The fourth proportional to 3,970.43, 5,478.69 and 2,202.02 is: 3,038.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.43 : 5,478.69 = 2,202.02 : x
  2. Step 2: Convert to fraction form
    3,970.43/5,478.69 = 2,202.02/x
  3. Step 3: Cross multiply
    3,970.43x = 5,478.69 × 2,202.02
  4. Step 4: Simplify right side
    3,970.43x = 12,064,184.95
  5. Step 5: Solve for x
    x = 12,064,184.95/3,970.43
  6. Step 6: Final answer
    x = 3,038.51

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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.