Home / 8,420.35-12,630.51-3,739.26

Finding the Fourth Proportional to 8,420.35, 12,630.51 and 3,739.26

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Solution

The fourth proportional to 8,420.35, 12,630.51 and 3,739.26 is: 5,608.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,420.35 : 12,630.51 = 3,739.26 : x
  2. Step 2: Convert to fraction form
    8,420.35/12,630.51 = 3,739.26/x
  3. Step 3: Cross multiply
    8,420.35x = 12,630.51 × 3,739.26
  4. Step 4: Simplify right side
    8,420.35x = 47,228,760.82
  5. Step 5: Solve for x
    x = 47,228,760.82/8,420.35
  6. Step 6: Final answer
    x = 5,608.88

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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.