Home / 2,220.12-3,062.75-1,434.42

Finding the Fourth Proportional to 2,220.12, 3,062.75 and 1,434.42

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Solution

The fourth proportional to 2,220.12, 3,062.75 and 1,434.42 is: 1,978.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.12 : 3,062.75 = 1,434.42 : x
  2. Step 2: Convert to fraction form
    2,220.12/3,062.75 = 1,434.42/x
  3. Step 3: Cross multiply
    2,220.12x = 3,062.75 × 1,434.42
  4. Step 4: Simplify right side
    2,220.12x = 4,393,262.68
  5. Step 5: Solve for x
    x = 4,393,262.68/2,220.12
  6. Step 6: Final answer
    x = 1,978.84

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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.