Home / 7,140.72-10,705.26-2,983.80

Finding the Fourth Proportional to 7,140.72, 10,705.26 and 2,983.80

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Solution

The fourth proportional to 7,140.72, 10,705.26 and 2,983.80 is: 4,473.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.72 : 10,705.26 = 2,983.80 : x
  2. Step 2: Convert to fraction form
    7,140.72/10,705.26 = 2,983.80/x
  3. Step 3: Cross multiply
    7,140.72x = 10,705.26 × 2,983.80
  4. Step 4: Simplify right side
    7,140.72x = 31,942,354.79
  5. Step 5: Solve for x
    x = 31,942,354.79/7,140.72
  6. Step 6: Final answer
    x = 4,473.27

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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.