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Finding the Fourth Proportional to 4,326.88, 6,490.88 and 1,553.86

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Solution

The fourth proportional to 4,326.88, 6,490.88 and 1,553.86 is: 2,330.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,326.88 : 6,490.88 = 1,553.86 : x
  2. Step 2: Convert to fraction form
    4,326.88/6,490.88 = 1,553.86/x
  3. Step 3: Cross multiply
    4,326.88x = 6,490.88 × 1,553.86
  4. Step 4: Simplify right side
    4,326.88x = 10,085,918.80
  5. Step 5: Solve for x
    x = 10,085,918.80/4,326.88
  6. Step 6: Final answer
    x = 2,330.99

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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.