Home / 4,917.68-6,781.56-4,170.80

Finding the Fourth Proportional to 4,917.68, 6,781.56 and 4,170.80

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Solution

The fourth proportional to 4,917.68, 6,781.56 and 4,170.80 is: 5,751.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,917.68 : 6,781.56 = 4,170.80 : x
  2. Step 2: Convert to fraction form
    4,917.68/6,781.56 = 4,170.80/x
  3. Step 3: Cross multiply
    4,917.68x = 6,781.56 × 4,170.80
  4. Step 4: Simplify right side
    4,917.68x = 28,284,530.45
  5. Step 5: Solve for x
    x = 28,284,530.45/4,917.68
  6. Step 6: Final answer
    x = 5,751.60

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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.