Home / 2,220.40-3,064.80-1,335.88

Finding the Fourth Proportional to 2,220.40, 3,064.80 and 1,335.88

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Solution

The fourth proportional to 2,220.40, 3,064.80 and 1,335.88 is: 1,843.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.40 : 3,064.80 = 1,335.88 : x
  2. Step 2: Convert to fraction form
    2,220.40/3,064.80 = 1,335.88/x
  3. Step 3: Cross multiply
    2,220.40x = 3,064.80 × 1,335.88
  4. Step 4: Simplify right side
    2,220.40x = 4,094,205.02
  5. Step 5: Solve for x
    x = 4,094,205.02/2,220.40
  6. Step 6: Final answer
    x = 1,843.90

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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.