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Finding the Fourth Proportional to 9,889.88, 14,840.66 and 3,654.31

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Solution

The fourth proportional to 9,889.88, 14,840.66 and 3,654.31 is: 5,483.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,889.88 : 14,840.66 = 3,654.31 : x
  2. Step 2: Convert to fraction form
    9,889.88/14,840.66 = 3,654.31/x
  3. Step 3: Cross multiply
    9,889.88x = 14,840.66 × 3,654.31
  4. Step 4: Simplify right side
    9,889.88x = 54,232,279.77
  5. Step 5: Solve for x
    x = 54,232,279.77/9,889.88
  6. Step 6: Final answer
    x = 5,483.61

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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.