Home / 2,239.83-3,090.91-1,245.09

Finding the Fourth Proportional to 2,239.83, 3,090.91 and 1,245.09

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Solution

The fourth proportional to 2,239.83, 3,090.91 and 1,245.09 is: 1,718.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,239.83 : 3,090.91 = 1,245.09 : x
  2. Step 2: Convert to fraction form
    2,239.83/3,090.91 = 1,245.09/x
  3. Step 3: Cross multiply
    2,239.83x = 3,090.91 × 1,245.09
  4. Step 4: Simplify right side
    2,239.83x = 3,848,461.13
  5. Step 5: Solve for x
    x = 3,848,461.13/2,239.83
  6. Step 6: Final answer
    x = 1,718.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.