Home / 7,878.48-11,814.78-2,612.52

Finding the Fourth Proportional to 7,878.48, 11,814.78 and 2,612.52

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Solution

The fourth proportional to 7,878.48, 11,814.78 and 2,612.52 is: 3,917.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,878.48 : 11,814.78 = 2,612.52 : x
  2. Step 2: Convert to fraction form
    7,878.48/11,814.78 = 2,612.52/x
  3. Step 3: Cross multiply
    7,878.48x = 11,814.78 × 2,612.52
  4. Step 4: Simplify right side
    7,878.48x = 30,866,349.05
  5. Step 5: Solve for x
    x = 30,866,349.05/7,878.48
  6. Step 6: Final answer
    x = 3,917.81

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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.