Home / 2,154.14-3,231.32-693.30

Finding the Fourth Proportional to 2,154.14, 3,231.32 and 693.30

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Solution

The fourth proportional to 2,154.14, 3,231.32 and 693.30 is: 1,039.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154.14 : 3,231.32 = 693.30 : x
  2. Step 2: Convert to fraction form
    2,154.14/3,231.32 = 693.30/x
  3. Step 3: Cross multiply
    2,154.14x = 3,231.32 × 693.30
  4. Step 4: Simplify right side
    2,154.14x = 2,240,270.69
  5. Step 5: Solve for x
    x = 2,240,270.69/2,154.14
  6. Step 6: Final answer
    x = 1,039.99

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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.