Home / 5,415.44-8,129.30-3,637.80

Finding the Fourth Proportional to 5,415.44, 8,129.30 and 3,637.80

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Solution

The fourth proportional to 5,415.44, 8,129.30 and 3,637.80 is: 5,460.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.44 : 8,129.30 = 3,637.80 : x
  2. Step 2: Convert to fraction form
    5,415.44/8,129.30 = 3,637.80/x
  3. Step 3: Cross multiply
    5,415.44x = 8,129.30 × 3,637.80
  4. Step 4: Simplify right side
    5,415.44x = 29,572,749.35
  5. Step 5: Solve for x
    x = 29,572,749.35/5,415.44
  6. Step 6: Final answer
    x = 5,460.83

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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.