Home / 5,390.54-8,087.73-2,105.99

Finding the Fourth Proportional to 5,390.54, 8,087.73 and 2,105.99

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Solution

The fourth proportional to 5,390.54, 8,087.73 and 2,105.99 is: 3,159.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,390.54 : 8,087.73 = 2,105.99 : x
  2. Step 2: Convert to fraction form
    5,390.54/8,087.73 = 2,105.99/x
  3. Step 3: Cross multiply
    5,390.54x = 8,087.73 × 2,105.99
  4. Step 4: Simplify right side
    5,390.54x = 17,032,678.50
  5. Step 5: Solve for x
    x = 17,032,678.50/5,390.54
  6. Step 6: Final answer
    x = 3,159.74

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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.