Home / 3,129.08-4,318.21-1,712.85

Finding the Fourth Proportional to 3,129.08, 4,318.21 and 1,712.85

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Solution

The fourth proportional to 3,129.08, 4,318.21 and 1,712.85 is: 2,363.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.08 : 4,318.21 = 1,712.85 : x
  2. Step 2: Convert to fraction form
    3,129.08/4,318.21 = 1,712.85/x
  3. Step 3: Cross multiply
    3,129.08x = 4,318.21 × 1,712.85
  4. Step 4: Simplify right side
    3,129.08x = 7,396,431.95
  5. Step 5: Solve for x
    x = 7,396,431.95/3,129.08
  6. Step 6: Final answer
    x = 2,363.77

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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.