Home / 2,214.58-3,315.43-1,287.31

Finding the Fourth Proportional to 2,214.58, 3,315.43 and 1,287.31

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Solution

The fourth proportional to 2,214.58, 3,315.43 and 1,287.31 is: 1,927.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,214.58 : 3,315.43 = 1,287.31 : x
  2. Step 2: Convert to fraction form
    2,214.58/3,315.43 = 1,287.31/x
  3. Step 3: Cross multiply
    2,214.58x = 3,315.43 × 1,287.31
  4. Step 4: Simplify right side
    2,214.58x = 4,267,986.19
  5. Step 5: Solve for x
    x = 4,267,986.19/2,214.58
  6. Step 6: Final answer
    x = 1,927.22

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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.