Home / 3,129.12-4,318.30-2,068.77

Finding the Fourth Proportional to 3,129.12, 4,318.30 and 2,068.77

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Solution

The fourth proportional to 3,129.12, 4,318.30 and 2,068.77 is: 2,854.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.12 : 4,318.30 = 2,068.77 : x
  2. Step 2: Convert to fraction form
    3,129.12/4,318.30 = 2,068.77/x
  3. Step 3: Cross multiply
    3,129.12x = 4,318.30 × 2,068.77
  4. Step 4: Simplify right side
    3,129.12x = 8,933,548.93
  5. Step 5: Solve for x
    x = 8,933,548.93/3,129.12
  6. Step 6: Final answer
    x = 2,854.97

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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.