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Finding the Fourth Proportional to 7,811.18, 11,717.13 and 4,345.82

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Solution

The fourth proportional to 7,811.18, 11,717.13 and 4,345.82 is: 6,518.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,811.18 : 11,717.13 = 4,345.82 : x
  2. Step 2: Convert to fraction form
    7,811.18/11,717.13 = 4,345.82/x
  3. Step 3: Cross multiply
    7,811.18x = 11,717.13 × 4,345.82
  4. Step 4: Simplify right side
    7,811.18x = 50,920,537.90
  5. Step 5: Solve for x
    x = 50,920,537.90/7,811.18
  6. Step 6: Final answer
    x = 6,518.93

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