Home / 3,678.89-5,074.82-2,261.60

Finding the Fourth Proportional to 3,678.89, 5,074.82 and 2,261.60

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Solution

The fourth proportional to 3,678.89, 5,074.82 and 2,261.60 is: 3,119.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.89 : 5,074.82 = 2,261.60 : x
  2. Step 2: Convert to fraction form
    3,678.89/5,074.82 = 2,261.60/x
  3. Step 3: Cross multiply
    3,678.89x = 5,074.82 × 2,261.60
  4. Step 4: Simplify right side
    3,678.89x = 11,477,176.23
  5. Step 5: Solve for x
    x = 11,477,176.23/3,678.89
  6. Step 6: Final answer
    x = 3,119.74

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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.