Home / 5,099.72-7,038.07-2,861.57

Finding the Fourth Proportional to 5,099.72, 7,038.07 and 2,861.57

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Solution

The fourth proportional to 5,099.72, 7,038.07 and 2,861.57 is: 3,949.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,099.72 : 7,038.07 = 2,861.57 : x
  2. Step 2: Convert to fraction form
    5,099.72/7,038.07 = 2,861.57/x
  3. Step 3: Cross multiply
    5,099.72x = 7,038.07 × 2,861.57
  4. Step 4: Simplify right side
    5,099.72x = 20,139,940.41
  5. Step 5: Solve for x
    x = 20,139,940.41/5,099.72
  6. Step 6: Final answer
    x = 3,949.23

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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.