Home / 7,690.46-11,535.78-2,143.67

Finding the Fourth Proportional to 7,690.46, 11,535.78 and 2,143.67

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Solution

The fourth proportional to 7,690.46, 11,535.78 and 2,143.67 is: 3,215.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,690.46 : 11,535.78 = 2,143.67 : x
  2. Step 2: Convert to fraction form
    7,690.46/11,535.78 = 2,143.67/x
  3. Step 3: Cross multiply
    7,690.46x = 11,535.78 × 2,143.67
  4. Step 4: Simplify right side
    7,690.46x = 24,728,847.83
  5. Step 5: Solve for x
    x = 24,728,847.83/7,690.46
  6. Step 6: Final answer
    x = 3,215.52

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Half scale
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Double scale
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Similar ratio
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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.