Home / 2,225.79-3,071.46-1,231.01

Finding the Fourth Proportional to 2,225.79, 3,071.46 and 1,231.01

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Solution

The fourth proportional to 2,225.79, 3,071.46 and 1,231.01 is: 1,698.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,225.79 : 3,071.46 = 1,231.01 : x
  2. Step 2: Convert to fraction form
    2,225.79/3,071.46 = 1,231.01/x
  3. Step 3: Cross multiply
    2,225.79x = 3,071.46 × 1,231.01
  4. Step 4: Simplify right side
    2,225.79x = 3,780,998.75
  5. Step 5: Solve for x
    x = 3,780,998.75/2,225.79
  6. Step 6: Final answer
    x = 1,698.72

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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.