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Finding the Fourth Proportional to 7,888.54, 11,813.34 and 6,118.81

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Solution

The fourth proportional to 7,888.54, 11,813.34 and 6,118.81 is: 9,163.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,888.54 : 11,813.34 = 6,118.81 : x
  2. Step 2: Convert to fraction form
    7,888.54/11,813.34 = 6,118.81/x
  3. Step 3: Cross multiply
    7,888.54x = 11,813.34 × 6,118.81
  4. Step 4: Simplify right side
    7,888.54x = 72,283,582.93
  5. Step 5: Solve for x
    x = 72,283,582.93/7,888.54
  6. Step 6: Final answer
    x = 9,163.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.