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Finding the Fourth Proportional to 4,071.88, 5,619.20 and 2,208.88

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Solution

The fourth proportional to 4,071.88, 5,619.20 and 2,208.88 is: 3,048.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,071.88 : 5,619.20 = 2,208.88 : x
  2. Step 2: Convert to fraction form
    4,071.88/5,619.20 = 2,208.88/x
  3. Step 3: Cross multiply
    4,071.88x = 5,619.20 × 2,208.88
  4. Step 4: Simplify right side
    4,071.88x = 12,412,099.36
  5. Step 5: Solve for x
    x = 12,412,099.36/4,071.88
  6. Step 6: Final answer
    x = 3,048.25

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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.