Home / 7,338.50-10,128.24-4,687.67

Finding the Fourth Proportional to 7,338.50, 10,128.24 and 4,687.67

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Solution

The fourth proportional to 7,338.50, 10,128.24 and 4,687.67 is: 6,469.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,338.50 : 10,128.24 = 4,687.67 : x
  2. Step 2: Convert to fraction form
    7,338.50/10,128.24 = 4,687.67/x
  3. Step 3: Cross multiply
    7,338.50x = 10,128.24 × 4,687.67
  4. Step 4: Simplify right side
    7,338.50x = 47,477,872.12
  5. Step 5: Solve for x
    x = 47,477,872.12/7,338.50
  6. Step 6: Final answer
    x = 6,469.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.