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Finding the Fourth Proportional to 8,990.84, 13,490.54 and 4,061.96

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Solution

The fourth proportional to 8,990.84, 13,490.54 and 4,061.96 is: 6,094.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,990.84 : 13,490.54 = 4,061.96 : x
  2. Step 2: Convert to fraction form
    8,990.84/13,490.54 = 4,061.96/x
  3. Step 3: Cross multiply
    8,990.84x = 13,490.54 × 4,061.96
  4. Step 4: Simplify right side
    8,990.84x = 54,798,033.86
  5. Step 5: Solve for x
    x = 54,798,033.86/8,990.84
  6. Step 6: Final answer
    x = 6,094.87

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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.