Home / 2,213.86-3,316.52-1,240.64

Finding the Fourth Proportional to 2,213.86, 3,316.52 and 1,240.64

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Solution

The fourth proportional to 2,213.86, 3,316.52 and 1,240.64 is: 1,858.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,213.86 : 3,316.52 = 1,240.64 : x
  2. Step 2: Convert to fraction form
    2,213.86/3,316.52 = 1,240.64/x
  3. Step 3: Cross multiply
    2,213.86x = 3,316.52 × 1,240.64
  4. Step 4: Simplify right side
    2,213.86x = 4,114,618.77
  5. Step 5: Solve for x
    x = 4,114,618.77/2,213.86
  6. Step 6: Final answer
    x = 1,858.57

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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.