Home / 3,748.39-5,621.51-1,115.79

Finding the Fourth Proportional to 3,748.39, 5,621.51 and 1,115.79

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Solution

The fourth proportional to 3,748.39, 5,621.51 and 1,115.79 is: 1,673.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,748.39 : 5,621.51 = 1,115.79 : x
  2. Step 2: Convert to fraction form
    3,748.39/5,621.51 = 1,115.79/x
  3. Step 3: Cross multiply
    3,748.39x = 5,621.51 × 1,115.79
  4. Step 4: Simplify right side
    3,748.39x = 6,272,396.54
  5. Step 5: Solve for x
    x = 6,272,396.54/3,748.39
  6. Step 6: Final answer
    x = 1,673.36

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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.