Home / 3,425.90-5,139.44-1,085.87

Finding the Fourth Proportional to 3,425.90, 5,139.44 and 1,085.87

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Solution

The fourth proportional to 3,425.90, 5,139.44 and 1,085.87 is: 1,628.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,425.90 : 5,139.44 = 1,085.87 : x
  2. Step 2: Convert to fraction form
    3,425.90/5,139.44 = 1,085.87/x
  3. Step 3: Cross multiply
    3,425.90x = 5,139.44 × 1,085.87
  4. Step 4: Simplify right side
    3,425.90x = 5,580,763.71
  5. Step 5: Solve for x
    x = 5,580,763.71/3,425.90
  6. Step 6: Final answer
    x = 1,628.99

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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.