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Finding the Fourth Proportional to 5,498.79, 8,248.99 and 1,989.06

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Solution

The fourth proportional to 5,498.79, 8,248.99 and 1,989.06 is: 2,983.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,498.79 : 8,248.99 = 1,989.06 : x
  2. Step 2: Convert to fraction form
    5,498.79/8,248.99 = 1,989.06/x
  3. Step 3: Cross multiply
    5,498.79x = 8,248.99 × 1,989.06
  4. Step 4: Simplify right side
    5,498.79x = 16,407,736.05
  5. Step 5: Solve for x
    x = 16,407,736.05/5,498.79
  6. Step 6: Final answer
    x = 2,983.88

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.