Home / 5,190.13-7,779.39-2,725.21

Finding the Fourth Proportional to 5,190.13, 7,779.39 and 2,725.21

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Solution

The fourth proportional to 5,190.13, 7,779.39 and 2,725.21 is: 4,084.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190.13 : 7,779.39 = 2,725.21 : x
  2. Step 2: Convert to fraction form
    5,190.13/7,779.39 = 2,725.21/x
  3. Step 3: Cross multiply
    5,190.13x = 7,779.39 × 2,725.21
  4. Step 4: Simplify right side
    5,190.13x = 21,200,471.42
  5. Step 5: Solve for x
    x = 21,200,471.42/5,190.13
  6. Step 6: Final answer
    x = 4,084.77

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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.