Home / 5,247.71-7,861.29-2,779.13

Finding the Fourth Proportional to 5,247.71, 7,861.29 and 2,779.13

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Solution

The fourth proportional to 5,247.71, 7,861.29 and 2,779.13 is: 4,163.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,247.71 : 7,861.29 = 2,779.13 : x
  2. Step 2: Convert to fraction form
    5,247.71/7,861.29 = 2,779.13/x
  3. Step 3: Cross multiply
    5,247.71x = 7,861.29 × 2,779.13
  4. Step 4: Simplify right side
    5,247.71x = 21,847,507.57
  5. Step 5: Solve for x
    x = 21,847,507.57/5,247.71
  6. Step 6: Final answer
    x = 4,163.25

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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.