Home / 4,209.22-6,313.92-1,287.46

Finding the Fourth Proportional to 4,209.22, 6,313.92 and 1,287.46

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Solution

The fourth proportional to 4,209.22, 6,313.92 and 1,287.46 is: 1,931.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,209.22 : 6,313.92 = 1,287.46 : x
  2. Step 2: Convert to fraction form
    4,209.22/6,313.92 = 1,287.46/x
  3. Step 3: Cross multiply
    4,209.22x = 6,313.92 × 1,287.46
  4. Step 4: Simplify right side
    4,209.22x = 8,128,919.44
  5. Step 5: Solve for x
    x = 8,128,919.44/4,209.22
  6. Step 6: Final answer
    x = 1,931.22

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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.