Home / 2,758.91-4,139.51-1,115.03

Finding the Fourth Proportional to 2,758.91, 4,139.51 and 1,115.03

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Solution

The fourth proportional to 2,758.91, 4,139.51 and 1,115.03 is: 1,673.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,758.91 : 4,139.51 = 1,115.03 : x
  2. Step 2: Convert to fraction form
    2,758.91/4,139.51 = 1,115.03/x
  3. Step 3: Cross multiply
    2,758.91x = 4,139.51 × 1,115.03
  4. Step 4: Simplify right side
    2,758.91x = 4,615,682.61
  5. Step 5: Solve for x
    x = 4,615,682.61/2,758.91
  6. Step 6: Final answer
    x = 1,673.01

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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.