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Finding the Fourth Proportional to 8,699.68, 13,051.95 and 3,152.80

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Solution

The fourth proportional to 8,699.68, 13,051.95 and 3,152.80 is: 4,730.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,699.68 : 13,051.95 = 3,152.80 : x
  2. Step 2: Convert to fraction form
    8,699.68/13,051.95 = 3,152.80/x
  3. Step 3: Cross multiply
    8,699.68x = 13,051.95 × 3,152.80
  4. Step 4: Simplify right side
    8,699.68x = 41,150,187.96
  5. Step 5: Solve for x
    x = 41,150,187.96/8,699.68
  6. Step 6: Final answer
    x = 4,730.08

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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.