Home / 3,167.60-4,751.80-1,221.16

Finding the Fourth Proportional to 3,167.60, 4,751.80 and 1,221.16

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Solution

The fourth proportional to 3,167.60, 4,751.80 and 1,221.16 is: 1,831.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,167.60 : 4,751.80 = 1,221.16 : x
  2. Step 2: Convert to fraction form
    3,167.60/4,751.80 = 1,221.16/x
  3. Step 3: Cross multiply
    3,167.60x = 4,751.80 × 1,221.16
  4. Step 4: Simplify right side
    3,167.60x = 5,802,708.09
  5. Step 5: Solve for x
    x = 5,802,708.09/3,167.60
  6. Step 6: Final answer
    x = 1,831.89

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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.