Home / 5,390.68-8,084.40-2,102.89

Finding the Fourth Proportional to 5,390.68, 8,084.40 and 2,102.89

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Solution

The fourth proportional to 5,390.68, 8,084.40 and 2,102.89 is: 3,153.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,390.68 : 8,084.40 = 2,102.89 : x
  2. Step 2: Convert to fraction form
    5,390.68/8,084.40 = 2,102.89/x
  3. Step 3: Cross multiply
    5,390.68x = 8,084.40 × 2,102.89
  4. Step 4: Simplify right side
    5,390.68x = 17,000,603.92
  5. Step 5: Solve for x
    x = 17,000,603.92/5,390.68
  6. Step 6: Final answer
    x = 3,153.70

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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.