Home / 3,187.89-4,406.40-2,309.85

Finding the Fourth Proportional to 3,187.89, 4,406.40 and 2,309.85

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Solution

The fourth proportional to 3,187.89, 4,406.40 and 2,309.85 is: 3,192.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.89 : 4,406.40 = 2,309.85 : x
  2. Step 2: Convert to fraction form
    3,187.89/4,406.40 = 2,309.85/x
  3. Step 3: Cross multiply
    3,187.89x = 4,406.40 × 2,309.85
  4. Step 4: Simplify right side
    3,187.89x = 10,178,123.04
  5. Step 5: Solve for x
    x = 10,178,123.04/3,187.89
  6. Step 6: Final answer
    x = 3,192.75

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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.