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Finding the Fourth Proportional to 8,561.44, 11,811.54 and 5,373.40

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Solution

The fourth proportional to 8,561.44, 11,811.54 and 5,373.40 is: 7,413.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,561.44 : 11,811.54 = 5,373.40 : x
  2. Step 2: Convert to fraction form
    8,561.44/11,811.54 = 5,373.40/x
  3. Step 3: Cross multiply
    8,561.44x = 11,811.54 × 5,373.40
  4. Step 4: Simplify right side
    8,561.44x = 63,468,129.04
  5. Step 5: Solve for x
    x = 63,468,129.04/8,561.44
  6. Step 6: Final answer
    x = 7,413.25

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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.