Home / 2,783.54-4,175.34-1,139.66

Finding the Fourth Proportional to 2,783.54, 4,175.34 and 1,139.66

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Solution

The fourth proportional to 2,783.54, 4,175.34 and 1,139.66 is: 1,709.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,783.54 : 4,175.34 = 1,139.66 : x
  2. Step 2: Convert to fraction form
    2,783.54/4,175.34 = 1,139.66/x
  3. Step 3: Cross multiply
    2,783.54x = 4,175.34 × 1,139.66
  4. Step 4: Simplify right side
    2,783.54x = 4,758,467.98
  5. Step 5: Solve for x
    x = 4,758,467.98/2,783.54
  6. Step 6: Final answer
    x = 1,709.50

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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.