Home / 7,428.70-11,138.01-3,533.50

Finding the Fourth Proportional to 7,428.70, 11,138.01 and 3,533.50

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Solution

The fourth proportional to 7,428.70, 11,138.01 and 3,533.50 is: 5,297.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,428.70 : 11,138.01 = 3,533.50 : x
  2. Step 2: Convert to fraction form
    7,428.70/11,138.01 = 3,533.50/x
  3. Step 3: Cross multiply
    7,428.70x = 11,138.01 × 3,533.50
  4. Step 4: Simplify right side
    7,428.70x = 39,356,158.34
  5. Step 5: Solve for x
    x = 39,356,158.34/7,428.70
  6. Step 6: Final answer
    x = 5,297.85

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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.