Home / 3,989.89-5,979.16-2,941.65

Finding the Fourth Proportional to 3,989.89, 5,979.16 and 2,941.65

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Solution

The fourth proportional to 3,989.89, 5,979.16 and 2,941.65 is: 4,408.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989.89 : 5,979.16 = 2,941.65 : x
  2. Step 2: Convert to fraction form
    3,989.89/5,979.16 = 2,941.65/x
  3. Step 3: Cross multiply
    3,989.89x = 5,979.16 × 2,941.65
  4. Step 4: Simplify right side
    3,989.89x = 17,588,551.41
  5. Step 5: Solve for x
    x = 17,588,551.41/3,989.89
  6. Step 6: Final answer
    x = 4,408.29

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1.5x scale

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.