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Finding the Fourth Proportional to 5,129.03, 7,693.72 and 1,619.08

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Solution

The fourth proportional to 5,129.03, 7,693.72 and 1,619.08 is: 2,428.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129.03 : 7,693.72 = 1,619.08 : x
  2. Step 2: Convert to fraction form
    5,129.03/7,693.72 = 1,619.08/x
  3. Step 3: Cross multiply
    5,129.03x = 7,693.72 × 1,619.08
  4. Step 4: Simplify right side
    5,129.03x = 12,456,724.90
  5. Step 5: Solve for x
    x = 12,456,724.90/5,129.03
  6. Step 6: Final answer
    x = 2,428.67

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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.