Home / 7,639.23-11,462.72-3,478.67

Finding the Fourth Proportional to 7,639.23, 11,462.72 and 3,478.67

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Solution

The fourth proportional to 7,639.23, 11,462.72 and 3,478.67 is: 5,219.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,639.23 : 11,462.72 = 3,478.67 : x
  2. Step 2: Convert to fraction form
    7,639.23/11,462.72 = 3,478.67/x
  3. Step 3: Cross multiply
    7,639.23x = 11,462.72 × 3,478.67
  4. Step 4: Simplify right side
    7,639.23x = 39,874,945.48
  5. Step 5: Solve for x
    x = 39,874,945.48/7,639.23
  6. Step 6: Final answer
    x = 5,219.76

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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.