Home / 5,412.10-8,121.04-2,125.23

Finding the Fourth Proportional to 5,412.10, 8,121.04 and 2,125.23

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Solution

The fourth proportional to 5,412.10, 8,121.04 and 2,125.23 is: 3,188.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,412.10 : 8,121.04 = 2,125.23 : x
  2. Step 2: Convert to fraction form
    5,412.10/8,121.04 = 2,125.23/x
  3. Step 3: Cross multiply
    5,412.10x = 8,121.04 × 2,125.23
  4. Step 4: Simplify right side
    5,412.10x = 17,259,077.84
  5. Step 5: Solve for x
    x = 17,259,077.84/5,412.10
  6. Step 6: Final answer
    x = 3,188.98

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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.