Home / 11,905.37-17,856.61-3,140.95

Finding the Fourth Proportional to 11,905.37, 17,856.61 and 3,140.95

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Solution

The fourth proportional to 11,905.37, 17,856.61 and 3,140.95 is: 4,711.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,905.37 : 17,856.61 = 3,140.95 : x
  2. Step 2: Convert to fraction form
    11,905.37/17,856.61 = 3,140.95/x
  3. Step 3: Cross multiply
    11,905.37x = 17,856.61 × 3,140.95
  4. Step 4: Simplify right side
    11,905.37x = 56,086,719.18
  5. Step 5: Solve for x
    x = 56,086,719.18/11,905.37
  6. Step 6: Final answer
    x = 4,711.04

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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.