Home / 3,108.96-4,290.36-1,783.02

Finding the Fourth Proportional to 3,108.96, 4,290.36 and 1,783.02

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Solution

The fourth proportional to 3,108.96, 4,290.36 and 1,783.02 is: 2,460.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.96 : 4,290.36 = 1,783.02 : x
  2. Step 2: Convert to fraction form
    3,108.96/4,290.36 = 1,783.02/x
  3. Step 3: Cross multiply
    3,108.96x = 4,290.36 × 1,783.02
  4. Step 4: Simplify right side
    3,108.96x = 7,649,797.69
  5. Step 5: Solve for x
    x = 7,649,797.69/3,108.96
  6. Step 6: Final answer
    x = 2,460.56

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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.