Home / 10,190.79-15,280.68-3,167.76

Finding the Fourth Proportional to 10,190.79, 15,280.68 and 3,167.76

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Solution

The fourth proportional to 10,190.79, 15,280.68 and 3,167.76 is: 4,749.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,190.79 : 15,280.68 = 3,167.76 : x
  2. Step 2: Convert to fraction form
    10,190.79/15,280.68 = 3,167.76/x
  3. Step 3: Cross multiply
    10,190.79x = 15,280.68 × 3,167.76
  4. Step 4: Simplify right side
    10,190.79x = 48,405,526.88
  5. Step 5: Solve for x
    x = 48,405,526.88/10,190.79
  6. Step 6: Final answer
    x = 4,749.93

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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.