Home / 3,518.32-5,277.37-921.27

Finding the Fourth Proportional to 3,518.32, 5,277.37 and 921.27

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Solution

The fourth proportional to 3,518.32, 5,277.37 and 921.27 is: 1,381.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,518.32 : 5,277.37 = 921.27 : x
  2. Step 2: Convert to fraction form
    3,518.32/5,277.37 = 921.27/x
  3. Step 3: Cross multiply
    3,518.32x = 5,277.37 × 921.27
  4. Step 4: Simplify right side
    3,518.32x = 4,861,882.66
  5. Step 5: Solve for x
    x = 4,861,882.66/3,518.32
  6. Step 6: Final answer
    x = 1,381.88

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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.