Home / 7,678.40-11,518.32-3,295.04

Finding the Fourth Proportional to 7,678.40, 11,518.32 and 3,295.04

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Solution

The fourth proportional to 7,678.40, 11,518.32 and 3,295.04 is: 4,942.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,678.40 : 11,518.32 = 3,295.04 : x
  2. Step 2: Convert to fraction form
    7,678.40/11,518.32 = 3,295.04/x
  3. Step 3: Cross multiply
    7,678.40x = 11,518.32 × 3,295.04
  4. Step 4: Simplify right side
    7,678.40x = 37,953,325.13
  5. Step 5: Solve for x
    x = 37,953,325.13/7,678.40
  6. Step 6: Final answer
    x = 4,942.87

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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.