Home / 7,138.62-10,705.26-2,457.30

Finding the Fourth Proportional to 7,138.62, 10,705.26 and 2,457.30

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Solution

The fourth proportional to 7,138.62, 10,705.26 and 2,457.30 is: 3,685.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,138.62 : 10,705.26 = 2,457.30 : x
  2. Step 2: Convert to fraction form
    7,138.62/10,705.26 = 2,457.30/x
  3. Step 3: Cross multiply
    7,138.62x = 10,705.26 × 2,457.30
  4. Step 4: Simplify right side
    7,138.62x = 26,306,035.40
  5. Step 5: Solve for x
    x = 26,306,035.40/7,138.62
  6. Step 6: Final answer
    x = 3,685.03

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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.