Home / 3,918.59-5,878.27-1,145.20

Finding the Fourth Proportional to 3,918.59, 5,878.27 and 1,145.20

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Solution

The fourth proportional to 3,918.59, 5,878.27 and 1,145.20 is: 1,717.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.59 : 5,878.27 = 1,145.20 : x
  2. Step 2: Convert to fraction form
    3,918.59/5,878.27 = 1,145.20/x
  3. Step 3: Cross multiply
    3,918.59x = 5,878.27 × 1,145.20
  4. Step 4: Simplify right side
    3,918.59x = 6,731,799.29
  5. Step 5: Solve for x
    x = 6,731,799.29/3,918.59
  6. Step 6: Final answer
    x = 1,717.91

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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.