Home / 7,143.40-10,714.74-1,949.32

Finding the Fourth Proportional to 7,143.40, 10,714.74 and 1,949.32

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Solution

The fourth proportional to 7,143.40, 10,714.74 and 1,949.32 is: 2,923.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,143.40 : 10,714.74 = 1,949.32 : x
  2. Step 2: Convert to fraction form
    7,143.40/10,714.74 = 1,949.32/x
  3. Step 3: Cross multiply
    7,143.40x = 10,714.74 × 1,949.32
  4. Step 4: Simplify right side
    7,143.40x = 20,886,456.98
  5. Step 5: Solve for x
    x = 20,886,456.98/7,143.40
  6. Step 6: Final answer
    x = 2,923.88

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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.