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Finding the Fourth Proportional to 9,979.79, 13,772.57 and 5,503.59

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Solution

The fourth proportional to 9,979.79, 13,772.57 and 5,503.59 is: 7,595.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,979.79 : 13,772.57 = 5,503.59 : x
  2. Step 2: Convert to fraction form
    9,979.79/13,772.57 = 5,503.59/x
  3. Step 3: Cross multiply
    9,979.79x = 13,772.57 × 5,503.59
  4. Step 4: Simplify right side
    9,979.79x = 75,798,551.01
  5. Step 5: Solve for x
    x = 75,798,551.01/9,979.79
  6. Step 6: Final answer
    x = 7,595.21

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.