Home / 5,189.48-7,785.90-3,109.16

Finding the Fourth Proportional to 5,189.48, 7,785.90 and 3,109.16

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Solution

The fourth proportional to 5,189.48, 7,785.90 and 3,109.16 is: 4,664.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,189.48 : 7,785.90 = 3,109.16 : x
  2. Step 2: Convert to fraction form
    5,189.48/7,785.90 = 3,109.16/x
  3. Step 3: Cross multiply
    5,189.48x = 7,785.90 × 3,109.16
  4. Step 4: Simplify right side
    5,189.48x = 24,207,608.84
  5. Step 5: Solve for x
    x = 24,207,608.84/5,189.48
  6. Step 6: Final answer
    x = 4,664.75

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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.