Home / 3,129.94-4,309.46-2,656.84

Finding the Fourth Proportional to 3,129.94, 4,309.46 and 2,656.84

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Solution

The fourth proportional to 3,129.94, 4,309.46 and 2,656.84 is: 3,658.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.94 : 4,309.46 = 2,656.84 : x
  2. Step 2: Convert to fraction form
    3,129.94/4,309.46 = 2,656.84/x
  3. Step 3: Cross multiply
    3,129.94x = 4,309.46 × 2,656.84
  4. Step 4: Simplify right side
    3,129.94x = 11,449,545.71
  5. Step 5: Solve for x
    x = 11,449,545.71/3,129.94
  6. Step 6: Final answer
    x = 3,658.08

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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.