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Finding the Fourth Proportional to 11,897.79, 17,844.80 and 5,322.80

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Solution

The fourth proportional to 11,897.79, 17,844.80 and 5,322.80 is: 7,983.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,897.79 : 17,844.80 = 5,322.80 : x
  2. Step 2: Convert to fraction form
    11,897.79/17,844.80 = 5,322.80/x
  3. Step 3: Cross multiply
    11,897.79x = 17,844.80 × 5,322.80
  4. Step 4: Simplify right side
    11,897.79x = 94,984,185.60
  5. Step 5: Solve for x
    x = 94,984,185.60/11,897.79
  6. Step 6: Final answer
    x = 7,983.35

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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.