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Finding the Fourth Proportional to 8,837.20, 13,230.74 and 8,005.77

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Solution

The fourth proportional to 8,837.20, 13,230.74 and 8,005.77 is: 11,985.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,837.20 : 13,230.74 = 8,005.77 : x
  2. Step 2: Convert to fraction form
    8,837.20/13,230.74 = 8,005.77/x
  3. Step 3: Cross multiply
    8,837.20x = 13,230.74 × 8,005.77
  4. Step 4: Simplify right side
    8,837.20x = 105,922,281.38
  5. Step 5: Solve for x
    x = 105,922,281.38/8,837.20
  6. Step 6: Final answer
    x = 11,985.95

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1.5x scale

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.