Home / 3,428.10-5,140.62-1,087.44

Finding the Fourth Proportional to 3,428.10, 5,140.62 and 1,087.44

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Solution

The fourth proportional to 3,428.10, 5,140.62 and 1,087.44 is: 1,630.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.10 : 5,140.62 = 1,087.44 : x
  2. Step 2: Convert to fraction form
    3,428.10/5,140.62 = 1,087.44/x
  3. Step 3: Cross multiply
    3,428.10x = 5,140.62 × 1,087.44
  4. Step 4: Simplify right side
    3,428.10x = 5,590,115.81
  5. Step 5: Solve for x
    x = 5,590,115.81/3,428.10
  6. Step 6: Final answer
    x = 1,630.67

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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.