Home / 2,809.78-4,215.06-1,424.14

Finding the Fourth Proportional to 2,809.78, 4,215.06 and 1,424.14

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Solution

The fourth proportional to 2,809.78, 4,215.06 and 1,424.14 is: 2,136.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,809.78 : 4,215.06 = 1,424.14 : x
  2. Step 2: Convert to fraction form
    2,809.78/4,215.06 = 1,424.14/x
  3. Step 3: Cross multiply
    2,809.78x = 4,215.06 × 1,424.14
  4. Step 4: Simplify right side
    2,809.78x = 6,002,835.55
  5. Step 5: Solve for x
    x = 6,002,835.55/2,809.78
  6. Step 6: Final answer
    x = 2,136.41

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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.