Home / 5,181.50-7,153.65-3,194.78

Finding the Fourth Proportional to 5,181.50, 7,153.65 and 3,194.78

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Solution

The fourth proportional to 5,181.50, 7,153.65 and 3,194.78 is: 4,410.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,181.50 : 7,153.65 = 3,194.78 : x
  2. Step 2: Convert to fraction form
    5,181.50/7,153.65 = 3,194.78/x
  3. Step 3: Cross multiply
    5,181.50x = 7,153.65 × 3,194.78
  4. Step 4: Simplify right side
    5,181.50x = 22,854,302.18
  5. Step 5: Solve for x
    x = 22,854,302.18/5,181.50
  6. Step 6: Final answer
    x = 4,410.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.