Home / 3,428.13-5,138.77-1,580.58

Finding the Fourth Proportional to 3,428.13, 5,138.77 and 1,580.58

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Solution

The fourth proportional to 3,428.13, 5,138.77 and 1,580.58 is: 2,369.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.13 : 5,138.77 = 1,580.58 : x
  2. Step 2: Convert to fraction form
    3,428.13/5,138.77 = 1,580.58/x
  3. Step 3: Cross multiply
    3,428.13x = 5,138.77 × 1,580.58
  4. Step 4: Simplify right side
    3,428.13x = 8,122,237.09
  5. Step 5: Solve for x
    x = 8,122,237.09/3,428.13
  6. Step 6: Final answer
    x = 2,369.29

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1.5x scale

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.