Home / 8,790.54-12,131.78-4,812.25

Finding the Fourth Proportional to 8,790.54, 12,131.78 and 4,812.25

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Solution

The fourth proportional to 8,790.54, 12,131.78 and 4,812.25 is: 6,641.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,790.54 : 12,131.78 = 4,812.25 : x
  2. Step 2: Convert to fraction form
    8,790.54/12,131.78 = 4,812.25/x
  3. Step 3: Cross multiply
    8,790.54x = 12,131.78 × 4,812.25
  4. Step 4: Simplify right side
    8,790.54x = 58,381,232.05
  5. Step 5: Solve for x
    x = 58,381,232.05/8,790.54
  6. Step 6: Final answer
    x = 6,641.37

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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.