Home / 3,074.78-4,239.86-2,190.26

Finding the Fourth Proportional to 3,074.78, 4,239.86 and 2,190.26

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Solution

The fourth proportional to 3,074.78, 4,239.86 and 2,190.26 is: 3,020.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,074.78 : 4,239.86 = 2,190.26 : x
  2. Step 2: Convert to fraction form
    3,074.78/4,239.86 = 2,190.26/x
  3. Step 3: Cross multiply
    3,074.78x = 4,239.86 × 2,190.26
  4. Step 4: Simplify right side
    3,074.78x = 9,286,395.76
  5. Step 5: Solve for x
    x = 9,286,395.76/3,074.78
  6. Step 6: Final answer
    x = 3,020.18

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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.