Home / 8,790.61-12,131.11-4,811.75

Finding the Fourth Proportional to 8,790.61, 12,131.11 and 4,811.75

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Solution

The fourth proportional to 8,790.61, 12,131.11 and 4,811.75 is: 6,640.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,790.61 : 12,131.11 = 4,811.75 : x
  2. Step 2: Convert to fraction form
    8,790.61/12,131.11 = 4,811.75/x
  3. Step 3: Cross multiply
    8,790.61x = 12,131.11 × 4,811.75
  4. Step 4: Simplify right side
    8,790.61x = 58,371,886.84
  5. Step 5: Solve for x
    x = 58,371,886.84/8,790.61
  6. Step 6: Final answer
    x = 6,640.26

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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.