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Finding the Fourth Proportional to 5,187.15, 7,788.87 and 4,998.60

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Solution

The fourth proportional to 5,187.15, 7,788.87 and 4,998.60 is: 7,505.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,187.15 : 7,788.87 = 4,998.60 : x
  2. Step 2: Convert to fraction form
    5,187.15/7,788.87 = 4,998.60/x
  3. Step 3: Cross multiply
    5,187.15x = 7,788.87 × 4,998.60
  4. Step 4: Simplify right side
    5,187.15x = 38,933,445.58
  5. Step 5: Solve for x
    x = 38,933,445.58/5,187.15
  6. Step 6: Final answer
    x = 7,505.75

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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.