Home / 5,678.12-8,518.59-2,718.82

Finding the Fourth Proportional to 5,678.12, 8,518.59 and 2,718.82

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Solution

The fourth proportional to 5,678.12, 8,518.59 and 2,718.82 is: 4,078.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,678.12 : 8,518.59 = 2,718.82 : x
  2. Step 2: Convert to fraction form
    5,678.12/8,518.59 = 2,718.82/x
  3. Step 3: Cross multiply
    5,678.12x = 8,518.59 × 2,718.82
  4. Step 4: Simplify right side
    5,678.12x = 23,160,491.57
  5. Step 5: Solve for x
    x = 23,160,491.57/5,678.12
  6. Step 6: Final answer
    x = 4,078.90

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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.