Home / 2,227.21-3,342.80-1,188.07

Finding the Fourth Proportional to 2,227.21, 3,342.80 and 1,188.07

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Solution

The fourth proportional to 2,227.21, 3,342.80 and 1,188.07 is: 1,783.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,227.21 : 3,342.80 = 1,188.07 : x
  2. Step 2: Convert to fraction form
    2,227.21/3,342.80 = 1,188.07/x
  3. Step 3: Cross multiply
    2,227.21x = 3,342.80 × 1,188.07
  4. Step 4: Simplify right side
    2,227.21x = 3,971,480.40
  5. Step 5: Solve for x
    x = 3,971,480.40/2,227.21
  6. Step 6: Final answer
    x = 1,783.16

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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.