Home / 8,102.19-12,144.65-3,421.23

Finding the Fourth Proportional to 8,102.19, 12,144.65 and 3,421.23

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Solution

The fourth proportional to 8,102.19, 12,144.65 and 3,421.23 is: 5,128.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,102.19 : 12,144.65 = 3,421.23 : x
  2. Step 2: Convert to fraction form
    8,102.19/12,144.65 = 3,421.23/x
  3. Step 3: Cross multiply
    8,102.19x = 12,144.65 × 3,421.23
  4. Step 4: Simplify right side
    8,102.19x = 41,549,623.81
  5. Step 5: Solve for x
    x = 41,549,623.81/8,102.19
  6. Step 6: Final answer
    x = 5,128.20

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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.