Home / 3,415.12-5,119.44-1,105.12

Finding the Fourth Proportional to 3,415.12, 5,119.44 and 1,105.12

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Solution

The fourth proportional to 3,415.12, 5,119.44 and 1,105.12 is: 1,656.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,415.12 : 5,119.44 = 1,105.12 : x
  2. Step 2: Convert to fraction form
    3,415.12/5,119.44 = 1,105.12/x
  3. Step 3: Cross multiply
    3,415.12x = 5,119.44 × 1,105.12
  4. Step 4: Simplify right side
    3,415.12x = 5,657,595.53
  5. Step 5: Solve for x
    x = 5,657,595.53/3,415.12
  6. Step 6: Final answer
    x = 1,656.63

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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.