Home / 3,109.74-4,291.73-1,783.83

Finding the Fourth Proportional to 3,109.74, 4,291.73 and 1,783.83

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Solution

The fourth proportional to 3,109.74, 4,291.73 and 1,783.83 is: 2,461.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.74 : 4,291.73 = 1,783.83 : x
  2. Step 2: Convert to fraction form
    3,109.74/4,291.73 = 1,783.83/x
  3. Step 3: Cross multiply
    3,109.74x = 4,291.73 × 1,783.83
  4. Step 4: Simplify right side
    3,109.74x = 7,655,716.73
  5. Step 5: Solve for x
    x = 7,655,716.73/3,109.74
  6. Step 6: Final answer
    x = 2,461.85

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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.