Home / 2,239.84-3,091.04-1,245.20

Finding the Fourth Proportional to 2,239.84, 3,091.04 and 1,245.20

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Solution

The fourth proportional to 2,239.84, 3,091.04 and 1,245.20 is: 1,718.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,239.84 : 3,091.04 = 1,245.20 : x
  2. Step 2: Convert to fraction form
    2,239.84/3,091.04 = 1,245.20/x
  3. Step 3: Cross multiply
    2,239.84x = 3,091.04 × 1,245.20
  4. Step 4: Simplify right side
    2,239.84x = 3,848,963.01
  5. Step 5: Solve for x
    x = 3,848,963.01/2,239.84
  6. Step 6: Final answer
    x = 1,718.41

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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.