Home / 2,217.19-3,326.19-918.76

Finding the Fourth Proportional to 2,217.19, 3,326.19 and 918.76

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Solution

The fourth proportional to 2,217.19, 3,326.19 and 918.76 is: 1,378.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.19 : 3,326.19 = 918.76 : x
  2. Step 2: Convert to fraction form
    2,217.19/3,326.19 = 918.76/x
  3. Step 3: Cross multiply
    2,217.19x = 3,326.19 × 918.76
  4. Step 4: Simplify right side
    2,217.19x = 3,055,970.32
  5. Step 5: Solve for x
    x = 3,055,970.32/2,217.19
  6. Step 6: Final answer
    x = 1,378.31

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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.