Home / 2,220.90-3,064.64-1,422.82

Finding the Fourth Proportional to 2,220.90, 3,064.64 and 1,422.82

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Solution

The fourth proportional to 2,220.90, 3,064.64 and 1,422.82 is: 1,963.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.90 : 3,064.64 = 1,422.82 : x
  2. Step 2: Convert to fraction form
    2,220.90/3,064.64 = 1,422.82/x
  3. Step 3: Cross multiply
    2,220.90x = 3,064.64 × 1,422.82
  4. Step 4: Simplify right side
    2,220.90x = 4,360,410.56
  5. Step 5: Solve for x
    x = 4,360,410.56/2,220.90
  6. Step 6: Final answer
    x = 1,963.35

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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.