Home / 8,130.45-12,190.19-3,745.51

Finding the Fourth Proportional to 8,130.45, 12,190.19 and 3,745.51

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Solution

The fourth proportional to 8,130.45, 12,190.19 and 3,745.51 is: 5,615.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,130.45 : 12,190.19 = 3,745.51 : x
  2. Step 2: Convert to fraction form
    8,130.45/12,190.19 = 3,745.51/x
  3. Step 3: Cross multiply
    8,130.45x = 12,190.19 × 3,745.51
  4. Step 4: Simplify right side
    8,130.45x = 45,658,459.82
  5. Step 5: Solve for x
    x = 45,658,459.82/8,130.45
  6. Step 6: Final answer
    x = 5,615.74

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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.