Home / 2,290.83-3,161.28-1,242.87

Finding the Fourth Proportional to 2,290.83, 3,161.28 and 1,242.87

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Solution

The fourth proportional to 2,290.83, 3,161.28 and 1,242.87 is: 1,715.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,290.83 : 3,161.28 = 1,242.87 : x
  2. Step 2: Convert to fraction form
    2,290.83/3,161.28 = 1,242.87/x
  3. Step 3: Cross multiply
    2,290.83x = 3,161.28 × 1,242.87
  4. Step 4: Simplify right side
    2,290.83x = 3,929,060.07
  5. Step 5: Solve for x
    x = 3,929,060.07/2,290.83
  6. Step 6: Final answer
    x = 1,715.13

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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.