Home / 5,188.91-7,783.35-3,109.55

Finding the Fourth Proportional to 5,188.91, 7,783.35 and 3,109.55

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Solution

The fourth proportional to 5,188.91, 7,783.35 and 3,109.55 is: 4,664.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,188.91 : 7,783.35 = 3,109.55 : x
  2. Step 2: Convert to fraction form
    5,188.91/7,783.35 = 3,109.55/x
  3. Step 3: Cross multiply
    5,188.91x = 7,783.35 × 3,109.55
  4. Step 4: Simplify right side
    5,188.91x = 24,202,677.08
  5. Step 5: Solve for x
    x = 24,202,677.08/5,188.91
  6. Step 6: Final answer
    x = 4,664.31

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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.