Home / 3,137.26-4,328.71-2,129.11

Finding the Fourth Proportional to 3,137.26, 4,328.71 and 2,129.11

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Solution

The fourth proportional to 3,137.26, 4,328.71 and 2,129.11 is: 2,937.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,137.26 : 4,328.71 = 2,129.11 : x
  2. Step 2: Convert to fraction form
    3,137.26/4,328.71 = 2,129.11/x
  3. Step 3: Cross multiply
    3,137.26x = 4,328.71 × 2,129.11
  4. Step 4: Simplify right side
    3,137.26x = 9,216,299.75
  5. Step 5: Solve for x
    x = 9,216,299.75/3,137.26
  6. Step 6: Final answer
    x = 2,937.69

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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.