Home / 9,215.37-13,821.02-2,640.09

Finding the Fourth Proportional to 9,215.37, 13,821.02 and 2,640.09

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Solution

The fourth proportional to 9,215.37, 13,821.02 and 2,640.09 is: 3,959.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,215.37 : 13,821.02 = 2,640.09 : x
  2. Step 2: Convert to fraction form
    9,215.37/13,821.02 = 2,640.09/x
  3. Step 3: Cross multiply
    9,215.37x = 13,821.02 × 2,640.09
  4. Step 4: Simplify right side
    9,215.37x = 36,488,723.49
  5. Step 5: Solve for x
    x = 36,488,723.49/9,215.37
  6. Step 6: Final answer
    x = 3,959.55

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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.