Home / 2,175.28-3,001.74-1,231.16

Finding the Fourth Proportional to 2,175.28, 3,001.74 and 1,231.16

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Solution

The fourth proportional to 2,175.28, 3,001.74 and 1,231.16 is: 1,698.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,175.28 : 3,001.74 = 1,231.16 : x
  2. Step 2: Convert to fraction form
    2,175.28/3,001.74 = 1,231.16/x
  3. Step 3: Cross multiply
    2,175.28x = 3,001.74 × 1,231.16
  4. Step 4: Simplify right side
    2,175.28x = 3,695,622.22
  5. Step 5: Solve for x
    x = 3,695,622.22/2,175.28
  6. Step 6: Final answer
    x = 1,698.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.