Home / 2,939.51-4,405.14-2,113.89

Finding the Fourth Proportional to 2,939.51, 4,405.14 and 2,113.89

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Solution

The fourth proportional to 2,939.51, 4,405.14 and 2,113.89 is: 3,167.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.51 : 4,405.14 = 2,113.89 : x
  2. Step 2: Convert to fraction form
    2,939.51/4,405.14 = 2,113.89/x
  3. Step 3: Cross multiply
    2,939.51x = 4,405.14 × 2,113.89
  4. Step 4: Simplify right side
    2,939.51x = 9,311,981.39
  5. Step 5: Solve for x
    x = 9,311,981.39/2,939.51
  6. Step 6: Final answer
    x = 3,167.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.