Home / 5,390.18-8,083.65-2,102.39

Finding the Fourth Proportional to 5,390.18, 8,083.65 and 2,102.39

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Solution

The fourth proportional to 5,390.18, 8,083.65 and 2,102.39 is: 3,152.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,390.18 : 8,083.65 = 2,102.39 : x
  2. Step 2: Convert to fraction form
    5,390.18/8,083.65 = 2,102.39/x
  3. Step 3: Cross multiply
    5,390.18x = 8,083.65 × 2,102.39
  4. Step 4: Simplify right side
    5,390.18x = 16,994,984.92
  5. Step 5: Solve for x
    x = 16,994,984.92/5,390.18
  6. Step 6: Final answer
    x = 3,152.95

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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.