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Finding the Fourth Proportional to 8,653.02, 12,979.59 and 4,755.30

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Solution

The fourth proportional to 8,653.02, 12,979.59 and 4,755.30 is: 7,132.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,653.02 : 12,979.59 = 4,755.30 : x
  2. Step 2: Convert to fraction form
    8,653.02/12,979.59 = 4,755.30/x
  3. Step 3: Cross multiply
    8,653.02x = 12,979.59 × 4,755.30
  4. Step 4: Simplify right side
    8,653.02x = 61,721,844.33
  5. Step 5: Solve for x
    x = 61,721,844.33/8,653.02
  6. Step 6: Final answer
    x = 7,132.98

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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.