Home / 2,105.66-3,157.68-1,009.28

Finding the Fourth Proportional to 2,105.66, 3,157.68 and 1,009.28

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Solution

The fourth proportional to 2,105.66, 3,157.68 and 1,009.28 is: 1,513.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,105.66 : 3,157.68 = 1,009.28 : x
  2. Step 2: Convert to fraction form
    2,105.66/3,157.68 = 1,009.28/x
  3. Step 3: Cross multiply
    2,105.66x = 3,157.68 × 1,009.28
  4. Step 4: Simplify right side
    2,105.66x = 3,186,983.27
  5. Step 5: Solve for x
    x = 3,186,983.27/2,105.66
  6. Step 6: Final answer
    x = 1,513.53

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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.