Home / 8,405.22-12,600.84-3,137.31

Finding the Fourth Proportional to 8,405.22, 12,600.84 and 3,137.31

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Solution

The fourth proportional to 8,405.22, 12,600.84 and 3,137.31 is: 4,703.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,405.22 : 12,600.84 = 3,137.31 : x
  2. Step 2: Convert to fraction form
    8,405.22/12,600.84 = 3,137.31/x
  3. Step 3: Cross multiply
    8,405.22x = 12,600.84 × 3,137.31
  4. Step 4: Simplify right side
    8,405.22x = 39,532,741.34
  5. Step 5: Solve for x
    x = 39,532,741.34/8,405.22
  6. Step 6: Final answer
    x = 4,703.36

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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.