Home / 3,215.85-4,437.99-1,871.35

Finding the Fourth Proportional to 3,215.85, 4,437.99 and 1,871.35

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Solution

The fourth proportional to 3,215.85, 4,437.99 and 1,871.35 is: 2,582.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.85 : 4,437.99 = 1,871.35 : x
  2. Step 2: Convert to fraction form
    3,215.85/4,437.99 = 1,871.35/x
  3. Step 3: Cross multiply
    3,215.85x = 4,437.99 × 1,871.35
  4. Step 4: Simplify right side
    3,215.85x = 8,305,021.49
  5. Step 5: Solve for x
    x = 8,305,021.49/3,215.85
  6. Step 6: Final answer
    x = 2,582.53

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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.