Home / 8,442.31-12,659.61-3,509.01

Finding the Fourth Proportional to 8,442.31, 12,659.61 and 3,509.01

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Solution

The fourth proportional to 8,442.31, 12,659.61 and 3,509.01 is: 5,261.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,442.31 : 12,659.61 = 3,509.01 : x
  2. Step 2: Convert to fraction form
    8,442.31/12,659.61 = 3,509.01/x
  3. Step 3: Cross multiply
    8,442.31x = 12,659.61 × 3,509.01
  4. Step 4: Simplify right side
    8,442.31x = 44,422,698.09
  5. Step 5: Solve for x
    x = 44,422,698.09/8,442.31
  6. Step 6: Final answer
    x = 5,261.91

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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.