Home / 8,812.95-12,161.44-5,278.11

Finding the Fourth Proportional to 8,812.95, 12,161.44 and 5,278.11

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Solution

The fourth proportional to 8,812.95, 12,161.44 and 5,278.11 is: 7,283.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.95 : 12,161.44 = 5,278.11 : x
  2. Step 2: Convert to fraction form
    8,812.95/12,161.44 = 5,278.11/x
  3. Step 3: Cross multiply
    8,812.95x = 12,161.44 × 5,278.11
  4. Step 4: Simplify right side
    8,812.95x = 64,189,418.08
  5. Step 5: Solve for x
    x = 64,189,418.08/8,812.95
  6. Step 6: Final answer
    x = 7,283.53

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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.