Home / 7,869.87-11,801.73-3,188.67

Finding the Fourth Proportional to 7,869.87, 11,801.73 and 3,188.67

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Solution

The fourth proportional to 7,869.87, 11,801.73 and 3,188.67 is: 4,781.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,869.87 : 11,801.73 = 3,188.67 : x
  2. Step 2: Convert to fraction form
    7,869.87/11,801.73 = 3,188.67/x
  3. Step 3: Cross multiply
    7,869.87x = 11,801.73 × 3,188.67
  4. Step 4: Simplify right side
    7,869.87x = 37,631,822.40
  5. Step 5: Solve for x
    x = 37,631,822.40/7,869.87
  6. Step 6: Final answer
    x = 4,781.76

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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.