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Finding the Fourth Proportional to 5,579.69, 7,696.72 and 3,455.56

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Solution

The fourth proportional to 5,579.69, 7,696.72 and 3,455.56 is: 4,766.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,579.69 : 7,696.72 = 3,455.56 : x
  2. Step 2: Convert to fraction form
    5,579.69/7,696.72 = 3,455.56/x
  3. Step 3: Cross multiply
    5,579.69x = 7,696.72 × 3,455.56
  4. Step 4: Simplify right side
    5,579.69x = 26,596,491.70
  5. Step 5: Solve for x
    x = 26,596,491.70/5,579.69
  6. Step 6: Final answer
    x = 4,766.67

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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.