Home / 4,989.57-6,885.71-2,999.75

Finding the Fourth Proportional to 4,989.57, 6,885.71 and 2,999.75

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Solution

The fourth proportional to 4,989.57, 6,885.71 and 2,999.75 is: 4,139.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,989.57 : 6,885.71 = 2,999.75 : x
  2. Step 2: Convert to fraction form
    4,989.57/6,885.71 = 2,999.75/x
  3. Step 3: Cross multiply
    4,989.57x = 6,885.71 × 2,999.75
  4. Step 4: Simplify right side
    4,989.57x = 20,655,359.15
  5. Step 5: Solve for x
    x = 20,655,359.15/4,989.57
  6. Step 6: Final answer
    x = 4,139.71

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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.