Home / 7,774.20-11,660.10-3,156.12

Finding the Fourth Proportional to 7,774.20, 11,660.10 and 3,156.12

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Solution

The fourth proportional to 7,774.20, 11,660.10 and 3,156.12 is: 4,733.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,774.20 : 11,660.10 = 3,156.12 : x
  2. Step 2: Convert to fraction form
    7,774.20/11,660.10 = 3,156.12/x
  3. Step 3: Cross multiply
    7,774.20x = 11,660.10 × 3,156.12
  4. Step 4: Simplify right side
    7,774.20x = 36,800,674.81
  5. Step 5: Solve for x
    x = 36,800,674.81/7,774.20
  6. Step 6: Final answer
    x = 4,733.69

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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.