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Finding the Fourth Proportional to 8,811.95, 12,160.07 and 5,277.11

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Solution

The fourth proportional to 8,811.95, 12,160.07 and 5,277.11 is: 7,282.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,811.95 : 12,160.07 = 5,277.11 : x
  2. Step 2: Convert to fraction form
    8,811.95/12,160.07 = 5,277.11/x
  3. Step 3: Cross multiply
    8,811.95x = 12,160.07 × 5,277.11
  4. Step 4: Simplify right side
    8,811.95x = 64,169,939.81
  5. Step 5: Solve for x
    x = 64,169,939.81/8,811.95
  6. Step 6: Final answer
    x = 7,282.15

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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.