Home / 2,239.20-3,090.20-1,244.45

Finding the Fourth Proportional to 2,239.20, 3,090.20 and 1,244.45

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Solution

The fourth proportional to 2,239.20, 3,090.20 and 1,244.45 is: 1,717.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,239.20 : 3,090.20 = 1,244.45 : x
  2. Step 2: Convert to fraction form
    2,239.20/3,090.20 = 1,244.45/x
  3. Step 3: Cross multiply
    2,239.20x = 3,090.20 × 1,244.45
  4. Step 4: Simplify right side
    2,239.20x = 3,845,600.89
  5. Step 5: Solve for x
    x = 3,845,600.89/2,239.20
  6. Step 6: Final answer
    x = 1,717.40

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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.