Home / 3,447.12-5,170.68-1,985.34

Finding the Fourth Proportional to 3,447.12, 5,170.68 and 1,985.34

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Solution

The fourth proportional to 3,447.12, 5,170.68 and 1,985.34 is: 2,978.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,447.12 : 5,170.68 = 1,985.34 : x
  2. Step 2: Convert to fraction form
    3,447.12/5,170.68 = 1,985.34/x
  3. Step 3: Cross multiply
    3,447.12x = 5,170.68 × 1,985.34
  4. Step 4: Simplify right side
    3,447.12x = 10,265,557.83
  5. Step 5: Solve for x
    x = 10,265,557.83/3,447.12
  6. Step 6: Final answer
    x = 2,978.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.