Home / 7,819.15-11,699.56-7,731.67

Finding the Fourth Proportional to 7,819.15, 11,699.56 and 7,731.67

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Solution

The fourth proportional to 7,819.15, 11,699.56 and 7,731.67 is: 11,568.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,819.15 : 11,699.56 = 7,731.67 : x
  2. Step 2: Convert to fraction form
    7,819.15/11,699.56 = 7,731.67/x
  3. Step 3: Cross multiply
    7,819.15x = 11,699.56 × 7,731.67
  4. Step 4: Simplify right side
    7,819.15x = 90,457,137.07
  5. Step 5: Solve for x
    x = 90,457,137.07/7,819.15
  6. Step 6: Final answer
    x = 11,568.67

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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.