Home / 2,239.51-3,090.45-1,282.38

Finding the Fourth Proportional to 2,239.51, 3,090.45 and 1,282.38

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Solution

The fourth proportional to 2,239.51, 3,090.45 and 1,282.38 is: 1,769.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,239.51 : 3,090.45 = 1,282.38 : x
  2. Step 2: Convert to fraction form
    2,239.51/3,090.45 = 1,282.38/x
  3. Step 3: Cross multiply
    2,239.51x = 3,090.45 × 1,282.38
  4. Step 4: Simplify right side
    2,239.51x = 3,963,131.27
  5. Step 5: Solve for x
    x = 3,963,131.27/2,239.51
  6. Step 6: Final answer
    x = 1,769.65

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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.