Home / 3,754.20-5,631.28-1,289

Finding the Fourth Proportional to 3,754.20, 5,631.28 and 1,289

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Solution

The fourth proportional to 3,754.20, 5,631.28 and 1,289 is: 1,933.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,754.20 : 5,631.28 = 1,289 : x
  2. Step 2: Convert to fraction form
    3,754.20/5,631.28 = 1,289/x
  3. Step 3: Cross multiply
    3,754.20x = 5,631.28 × 1,289
  4. Step 4: Simplify right side
    3,754.20x = 7,258,719.92
  5. Step 5: Solve for x
    x = 7,258,719.92/3,754.20
  6. Step 6: Final answer
    x = 1,933.49

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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.