Home / 2,214.21-3,320.26-1,290.04

Finding the Fourth Proportional to 2,214.21, 3,320.26 and 1,290.04

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Solution

The fourth proportional to 2,214.21, 3,320.26 and 1,290.04 is: 1,934.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,214.21 : 3,320.26 = 1,290.04 : x
  2. Step 2: Convert to fraction form
    2,214.21/3,320.26 = 1,290.04/x
  3. Step 3: Cross multiply
    2,214.21x = 3,320.26 × 1,290.04
  4. Step 4: Simplify right side
    2,214.21x = 4,283,261.52
  5. Step 5: Solve for x
    x = 4,283,261.52/2,214.21
  6. Step 6: Final answer
    x = 1,934.44

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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.