Home / 8,790.68-12,131.08-4,811.76

Finding the Fourth Proportional to 8,790.68, 12,131.08 and 4,811.76

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Solution

The fourth proportional to 8,790.68, 12,131.08 and 4,811.76 is: 6,640.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,790.68 : 12,131.08 = 4,811.76 : x
  2. Step 2: Convert to fraction form
    8,790.68/12,131.08 = 4,811.76/x
  3. Step 3: Cross multiply
    8,790.68x = 12,131.08 × 4,811.76
  4. Step 4: Simplify right side
    8,790.68x = 58,371,845.50
  5. Step 5: Solve for x
    x = 58,371,845.50/8,790.68
  6. Step 6: Final answer
    x = 6,640.20

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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.