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Finding the Fourth Proportional to 9,809.70, 14,720.64 and 3,966.36

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Solution

The fourth proportional to 9,809.70, 14,720.64 and 3,966.36 is: 5,952.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,809.70 : 14,720.64 = 3,966.36 : x
  2. Step 2: Convert to fraction form
    9,809.70/14,720.64 = 3,966.36/x
  3. Step 3: Cross multiply
    9,809.70x = 14,720.64 × 3,966.36
  4. Step 4: Simplify right side
    9,809.70x = 58,387,357.67
  5. Step 5: Solve for x
    x = 58,387,357.67/9,809.70
  6. Step 6: Final answer
    x = 5,952.00

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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.