Home / 12,186.37-18,280.50-3,866.86

Finding the Fourth Proportional to 12,186.37, 18,280.50 and 3,866.86

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Solution

The fourth proportional to 12,186.37, 18,280.50 and 3,866.86 is: 5,800.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,186.37 : 18,280.50 = 3,866.86 : x
  2. Step 2: Convert to fraction form
    12,186.37/18,280.50 = 3,866.86/x
  3. Step 3: Cross multiply
    12,186.37x = 18,280.50 × 3,866.86
  4. Step 4: Simplify right side
    12,186.37x = 70,688,134.23
  5. Step 5: Solve for x
    x = 70,688,134.23/12,186.37
  6. Step 6: Final answer
    x = 5,800.59

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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.