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Finding the Fourth Proportional to 8,907.80, 13,352.70 and 5,979.32

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Solution

The fourth proportional to 8,907.80, 13,352.70 and 5,979.32 is: 8,962.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,907.80 : 13,352.70 = 5,979.32 : x
  2. Step 2: Convert to fraction form
    8,907.80/13,352.70 = 5,979.32/x
  3. Step 3: Cross multiply
    8,907.80x = 13,352.70 × 5,979.32
  4. Step 4: Simplify right side
    8,907.80x = 79,840,066.16
  5. Step 5: Solve for x
    x = 79,840,066.16/8,907.80
  6. Step 6: Final answer
    x = 8,962.94

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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.