Home / 8,322.48-12,485.52-3,128.36

Finding the Fourth Proportional to 8,322.48, 12,485.52 and 3,128.36

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Solution

The fourth proportional to 8,322.48, 12,485.52 and 3,128.36 is: 4,693.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,322.48 : 12,485.52 = 3,128.36 : x
  2. Step 2: Convert to fraction form
    8,322.48/12,485.52 = 3,128.36/x
  3. Step 3: Cross multiply
    8,322.48x = 12,485.52 × 3,128.36
  4. Step 4: Simplify right side
    8,322.48x = 39,059,138.92
  5. Step 5: Solve for x
    x = 39,059,138.92/8,322.48
  6. Step 6: Final answer
    x = 4,693.21

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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.