Home / 2,783.19-4,171.64-1,138.84

Finding the Fourth Proportional to 2,783.19, 4,171.64 and 1,138.84

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Solution

The fourth proportional to 2,783.19, 4,171.64 and 1,138.84 is: 1,706.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,783.19 : 4,171.64 = 1,138.84 : x
  2. Step 2: Convert to fraction form
    2,783.19/4,171.64 = 1,138.84/x
  3. Step 3: Cross multiply
    2,783.19x = 4,171.64 × 1,138.84
  4. Step 4: Simplify right side
    2,783.19x = 4,750,830.50
  5. Step 5: Solve for x
    x = 4,750,830.50/2,783.19
  6. Step 6: Final answer
    x = 1,706.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.