Home / 8,405.31-12,607.83-2,858.58

Finding the Fourth Proportional to 8,405.31, 12,607.83 and 2,858.58

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Solution

The fourth proportional to 8,405.31, 12,607.83 and 2,858.58 is: 4,287.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,405.31 : 12,607.83 = 2,858.58 : x
  2. Step 2: Convert to fraction form
    8,405.31/12,607.83 = 2,858.58/x
  3. Step 3: Cross multiply
    8,405.31x = 12,607.83 × 2,858.58
  4. Step 4: Simplify right side
    8,405.31x = 36,040,490.68
  5. Step 5: Solve for x
    x = 36,040,490.68/8,405.31
  6. Step 6: Final answer
    x = 4,287.82

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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.