Home / 3,678.34-5,518.54-1,488.61

Finding the Fourth Proportional to 3,678.34, 5,518.54 and 1,488.61

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Solution

The fourth proportional to 3,678.34, 5,518.54 and 1,488.61 is: 2,233.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.34 : 5,518.54 = 1,488.61 : x
  2. Step 2: Convert to fraction form
    3,678.34/5,518.54 = 1,488.61/x
  3. Step 3: Cross multiply
    3,678.34x = 5,518.54 × 1,488.61
  4. Step 4: Simplify right side
    3,678.34x = 8,214,953.83
  5. Step 5: Solve for x
    x = 8,214,953.83/3,678.34
  6. Step 6: Final answer
    x = 2,233.33

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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.