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Finding the Fourth Proportional to 8,790.60, 12,136.69 and 7,844.77

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Solution

The fourth proportional to 8,790.60, 12,136.69 and 7,844.77 is: 10,830.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,790.60 : 12,136.69 = 7,844.77 : x
  2. Step 2: Convert to fraction form
    8,790.60/12,136.69 = 7,844.77/x
  3. Step 3: Cross multiply
    8,790.60x = 12,136.69 × 7,844.77
  4. Step 4: Simplify right side
    8,790.60x = 95,209,454.19
  5. Step 5: Solve for x
    x = 95,209,454.19/8,790.60
  6. Step 6: Final answer
    x = 10,830.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.