Home / 3,170.80-4,756.20-1,221.64

Finding the Fourth Proportional to 3,170.80, 4,756.20 and 1,221.64

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Solution

The fourth proportional to 3,170.80, 4,756.20 and 1,221.64 is: 1,832.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,170.80 : 4,756.20 = 1,221.64 : x
  2. Step 2: Convert to fraction form
    3,170.80/4,756.20 = 1,221.64/x
  3. Step 3: Cross multiply
    3,170.80x = 4,756.20 × 1,221.64
  4. Step 4: Simplify right side
    3,170.80x = 5,810,364.17
  5. Step 5: Solve for x
    x = 5,810,364.17/3,170.80
  6. Step 6: Final answer
    x = 1,832.46

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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.