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Finding the Fourth Proportional to 9,901.79, 14,852.92 and 3,979.28

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Solution

The fourth proportional to 9,901.79, 14,852.92 and 3,979.28 is: 5,969.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,901.79 : 14,852.92 = 3,979.28 : x
  2. Step 2: Convert to fraction form
    9,901.79/14,852.92 = 3,979.28/x
  3. Step 3: Cross multiply
    9,901.79x = 14,852.92 × 3,979.28
  4. Step 4: Simplify right side
    9,901.79x = 59,103,878.60
  5. Step 5: Solve for x
    x = 59,103,878.60/9,901.79
  6. Step 6: Final answer
    x = 5,969.01

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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.