Home / 2,223.17-3,336.05-990.71

Finding the Fourth Proportional to 2,223.17, 3,336.05 and 990.71

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Solution

The fourth proportional to 2,223.17, 3,336.05 and 990.71 is: 1,486.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,223.17 : 3,336.05 = 990.71 : x
  2. Step 2: Convert to fraction form
    2,223.17/3,336.05 = 990.71/x
  3. Step 3: Cross multiply
    2,223.17x = 3,336.05 × 990.71
  4. Step 4: Simplify right side
    2,223.17x = 3,305,058.10
  5. Step 5: Solve for x
    x = 3,305,058.10/2,223.17
  6. Step 6: Final answer
    x = 1,486.64

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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.