Home / 3,610.89-5,415.79-1,145.39

Finding the Fourth Proportional to 3,610.89, 5,415.79 and 1,145.39

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Solution

The fourth proportional to 3,610.89, 5,415.79 and 1,145.39 is: 1,717.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,610.89 : 5,415.79 = 1,145.39 : x
  2. Step 2: Convert to fraction form
    3,610.89/5,415.79 = 1,145.39/x
  3. Step 3: Cross multiply
    3,610.89x = 5,415.79 × 1,145.39
  4. Step 4: Simplify right side
    3,610.89x = 6,203,191.16
  5. Step 5: Solve for x
    x = 6,203,191.16/3,610.89
  6. Step 6: Final answer
    x = 1,717.91

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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.