Home / 2,223.80-3,068.70-1,292.12

Finding the Fourth Proportional to 2,223.80, 3,068.70 and 1,292.12

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Solution

The fourth proportional to 2,223.80, 3,068.70 and 1,292.12 is: 1,783.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,223.80 : 3,068.70 = 1,292.12 : x
  2. Step 2: Convert to fraction form
    2,223.80/3,068.70 = 1,292.12/x
  3. Step 3: Cross multiply
    2,223.80x = 3,068.70 × 1,292.12
  4. Step 4: Simplify right side
    2,223.80x = 3,965,128.64
  5. Step 5: Solve for x
    x = 3,965,128.64/2,223.80
  6. Step 6: Final answer
    x = 1,783.04

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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.