Home / 8,812.62-13,215.05-4,128.86

Finding the Fourth Proportional to 8,812.62, 13,215.05 and 4,128.86

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Solution

The fourth proportional to 8,812.62, 13,215.05 and 4,128.86 is: 6,191.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.62 : 13,215.05 = 4,128.86 : x
  2. Step 2: Convert to fraction form
    8,812.62/13,215.05 = 4,128.86/x
  3. Step 3: Cross multiply
    8,812.62x = 13,215.05 × 4,128.86
  4. Step 4: Simplify right side
    8,812.62x = 54,563,004.62
  5. Step 5: Solve for x
    x = 54,563,004.62/8,812.62
  6. Step 6: Final answer
    x = 6,191.46

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1.5x scale

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.