Home / 7,790.20-11,677.50-3,108.52

Finding the Fourth Proportional to 7,790.20, 11,677.50 and 3,108.52

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Solution

The fourth proportional to 7,790.20, 11,677.50 and 3,108.52 is: 4,659.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,790.20 : 11,677.50 = 3,108.52 : x
  2. Step 2: Convert to fraction form
    7,790.20/11,677.50 = 3,108.52/x
  3. Step 3: Cross multiply
    7,790.20x = 11,677.50 × 3,108.52
  4. Step 4: Simplify right side
    7,790.20x = 36,299,742.30
  5. Step 5: Solve for x
    x = 36,299,742.30/7,790.20
  6. Step 6: Final answer
    x = 4,659.67

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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.