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Finding the Fourth Proportional to 5,221.36, 7,205.36 and 2,982.88

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Solution

The fourth proportional to 5,221.36, 7,205.36 and 2,982.88 is: 4,116.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,221.36 : 7,205.36 = 2,982.88 : x
  2. Step 2: Convert to fraction form
    5,221.36/7,205.36 = 2,982.88/x
  3. Step 3: Cross multiply
    5,221.36x = 7,205.36 × 2,982.88
  4. Step 4: Simplify right side
    5,221.36x = 21,492,724.24
  5. Step 5: Solve for x
    x = 21,492,724.24/5,221.36
  6. Step 6: Final answer
    x = 4,116.31

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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.