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Finding the Fourth Proportional to 8,702.56, 13,055.04 and 3,508

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Solution

The fourth proportional to 8,702.56, 13,055.04 and 3,508 is: 5,262.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,702.56 : 13,055.04 = 3,508 : x
  2. Step 2: Convert to fraction form
    8,702.56/13,055.04 = 3,508/x
  3. Step 3: Cross multiply
    8,702.56x = 13,055.04 × 3,508
  4. Step 4: Simplify right side
    8,702.56x = 45,797,080.32
  5. Step 5: Solve for x
    x = 45,797,080.32/8,702.56
  6. Step 6: Final answer
    x = 5,262.48

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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.