Home / 2,008.88-2,772.36-1,222.80

Finding the Fourth Proportional to 2,008.88, 2,772.36 and 1,222.80

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Solution

The fourth proportional to 2,008.88, 2,772.36 and 1,222.80 is: 1,687.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,008.88 : 2,772.36 = 1,222.80 : x
  2. Step 2: Convert to fraction form
    2,008.88/2,772.36 = 1,222.80/x
  3. Step 3: Cross multiply
    2,008.88x = 2,772.36 × 1,222.80
  4. Step 4: Simplify right side
    2,008.88x = 3,390,041.81
  5. Step 5: Solve for x
    x = 3,390,041.81/2,008.88
  6. Step 6: Final answer
    x = 1,687.53

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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.