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Finding the Fourth Proportional to 2,888.75, 3,984.54 and 2,143.37

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Solution

The fourth proportional to 2,888.75, 3,984.54 and 2,143.37 is: 2,956.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,888.75 : 3,984.54 = 2,143.37 : x
  2. Step 2: Convert to fraction form
    2,888.75/3,984.54 = 2,143.37/x
  3. Step 3: Cross multiply
    2,888.75x = 3,984.54 × 2,143.37
  4. Step 4: Simplify right side
    2,888.75x = 8,540,343.50
  5. Step 5: Solve for x
    x = 8,540,343.50/2,888.75
  6. Step 6: Final answer
    x = 2,956.41

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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.