Home / 1,857.90-2,781.38-1,373.12

Finding the Fourth Proportional to 1,857.90, 2,781.38 and 1,373.12

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Solution

The fourth proportional to 1,857.90, 2,781.38 and 1,373.12 is: 2,055.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,857.90 : 2,781.38 = 1,373.12 : x
  2. Step 2: Convert to fraction form
    1,857.90/2,781.38 = 1,373.12/x
  3. Step 3: Cross multiply
    1,857.90x = 2,781.38 × 1,373.12
  4. Step 4: Simplify right side
    1,857.90x = 3,819,147.73
  5. Step 5: Solve for x
    x = 3,819,147.73/1,857.90
  6. Step 6: Final answer
    x = 2,055.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.