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Finding the Fourth Proportional to 2,214.90, 3,322.31 and 571.41

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Solution

The fourth proportional to 2,214.90, 3,322.31 and 571.41 is: 857.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,214.90 : 3,322.31 = 571.41 : x
  2. Step 2: Convert to fraction form
    2,214.90/3,322.31 = 571.41/x
  3. Step 3: Cross multiply
    2,214.90x = 3,322.31 × 571.41
  4. Step 4: Simplify right side
    2,214.90x = 1,898,398.30
  5. Step 5: Solve for x
    x = 1,898,398.30/2,214.90
  6. Step 6: Final answer
    x = 857.10

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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.