Home / 3,129.03-4,318.38-2,137.59

Finding the Fourth Proportional to 3,129.03, 4,318.38 and 2,137.59

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Solution

The fourth proportional to 3,129.03, 4,318.38 and 2,137.59 is: 2,950.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.03 : 4,318.38 = 2,137.59 : x
  2. Step 2: Convert to fraction form
    3,129.03/4,318.38 = 2,137.59/x
  3. Step 3: Cross multiply
    3,129.03x = 4,318.38 × 2,137.59
  4. Step 4: Simplify right side
    3,129.03x = 9,230,925.90
  5. Step 5: Solve for x
    x = 9,230,925.90/3,129.03
  6. Step 6: Final answer
    x = 2,950.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.