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Finding the Fourth Proportional to 2,888.20, 3,983.20 and 2,328.49

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Solution

The fourth proportional to 2,888.20, 3,983.20 and 2,328.49 is: 3,211.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,888.20 : 3,983.20 = 2,328.49 : x
  2. Step 2: Convert to fraction form
    2,888.20/3,983.20 = 2,328.49/x
  3. Step 3: Cross multiply
    2,888.20x = 3,983.20 × 2,328.49
  4. Step 4: Simplify right side
    2,888.20x = 9,274,841.37
  5. Step 5: Solve for x
    x = 9,274,841.37/2,888.20
  6. Step 6: Final answer
    x = 3,211.29

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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.