Home / 8,104.59-12,150.81-3,430.08

Finding the Fourth Proportional to 8,104.59, 12,150.81 and 3,430.08

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Solution

The fourth proportional to 8,104.59, 12,150.81 and 3,430.08 is: 5,142.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,104.59 : 12,150.81 = 3,430.08 : x
  2. Step 2: Convert to fraction form
    8,104.59/12,150.81 = 3,430.08/x
  3. Step 3: Cross multiply
    8,104.59x = 12,150.81 × 3,430.08
  4. Step 4: Simplify right side
    8,104.59x = 41,678,250.36
  5. Step 5: Solve for x
    x = 41,678,250.36/8,104.59
  6. Step 6: Final answer
    x = 5,142.55

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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.