Home / 2,239.79-3,090.78-1,245.01

Finding the Fourth Proportional to 2,239.79, 3,090.78 and 1,245.01

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Solution

The fourth proportional to 2,239.79, 3,090.78 and 1,245.01 is: 1,718.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,239.79 : 3,090.78 = 1,245.01 : x
  2. Step 2: Convert to fraction form
    2,239.79/3,090.78 = 1,245.01/x
  3. Step 3: Cross multiply
    2,239.79x = 3,090.78 × 1,245.01
  4. Step 4: Simplify right side
    2,239.79x = 3,848,052.01
  5. Step 5: Solve for x
    x = 3,848,052.01/2,239.79
  6. Step 6: Final answer
    x = 1,718.04

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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.