Home / 3,447.39-5,170.32-981.75

Finding the Fourth Proportional to 3,447.39, 5,170.32 and 981.75

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Solution

The fourth proportional to 3,447.39, 5,170.32 and 981.75 is: 1,472.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,447.39 : 5,170.32 = 981.75 : x
  2. Step 2: Convert to fraction form
    3,447.39/5,170.32 = 981.75/x
  3. Step 3: Cross multiply
    3,447.39x = 5,170.32 × 981.75
  4. Step 4: Simplify right side
    3,447.39x = 5,075,961.66
  5. Step 5: Solve for x
    x = 5,075,961.66/3,447.39
  6. Step 6: Final answer
    x = 1,472.41

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1.5x scale

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.