Home / 7,678.87-11,518.34-2,342.12

Finding the Fourth Proportional to 7,678.87, 11,518.34 and 2,342.12

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Solution

The fourth proportional to 7,678.87, 11,518.34 and 2,342.12 is: 3,513.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,678.87 : 11,518.34 = 2,342.12 : x
  2. Step 2: Convert to fraction form
    7,678.87/11,518.34 = 2,342.12/x
  3. Step 3: Cross multiply
    7,678.87x = 11,518.34 × 2,342.12
  4. Step 4: Simplify right side
    7,678.87x = 26,977,265.18
  5. Step 5: Solve for x
    x = 26,977,265.18/7,678.87
  6. Step 6: Final answer
    x = 3,513.18

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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.