Home / 10,910.40-16,365.20-3,119.19

Finding the Fourth Proportional to 10,910.40, 16,365.20 and 3,119.19

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Solution

The fourth proportional to 10,910.40, 16,365.20 and 3,119.19 is: 4,678.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,910.40 : 16,365.20 = 3,119.19 : x
  2. Step 2: Convert to fraction form
    10,910.40/16,365.20 = 3,119.19/x
  3. Step 3: Cross multiply
    10,910.40x = 16,365.20 × 3,119.19
  4. Step 4: Simplify right side
    10,910.40x = 51,046,152.59
  5. Step 5: Solve for x
    x = 51,046,152.59/10,910.40
  6. Step 6: Final answer
    x = 4,678.67

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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.