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Finding the Fourth Proportional to 2,888.66, 3,980.34 and 2,223.45

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Solution

The fourth proportional to 2,888.66, 3,980.34 and 2,223.45 is: 3,063.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,888.66 : 3,980.34 = 2,223.45 : x
  2. Step 2: Convert to fraction form
    2,888.66/3,980.34 = 2,223.45/x
  3. Step 3: Cross multiply
    2,888.66x = 3,980.34 × 2,223.45
  4. Step 4: Simplify right side
    2,888.66x = 8,850,086.97
  5. Step 5: Solve for x
    x = 8,850,086.97/2,888.66
  6. Step 6: Final answer
    x = 3,063.73

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1.5x scale

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.