Home / 2,678.56-4,021.44-1,509.36

Finding the Fourth Proportional to 2,678.56, 4,021.44 and 1,509.36

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Solution

The fourth proportional to 2,678.56, 4,021.44 and 1,509.36 is: 2,266.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,678.56 : 4,021.44 = 1,509.36 : x
  2. Step 2: Convert to fraction form
    2,678.56/4,021.44 = 1,509.36/x
  3. Step 3: Cross multiply
    2,678.56x = 4,021.44 × 1,509.36
  4. Step 4: Simplify right side
    2,678.56x = 6,069,800.68
  5. Step 5: Solve for x
    x = 6,069,800.68/2,678.56
  6. Step 6: Final answer
    x = 2,266.07

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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.