Home / 2,812.32-3,879.47-1,692.58

Finding the Fourth Proportional to 2,812.32, 3,879.47 and 1,692.58

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Solution

The fourth proportional to 2,812.32, 3,879.47 and 1,692.58 is: 2,334.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.32 : 3,879.47 = 1,692.58 : x
  2. Step 2: Convert to fraction form
    2,812.32/3,879.47 = 1,692.58/x
  3. Step 3: Cross multiply
    2,812.32x = 3,879.47 × 1,692.58
  4. Step 4: Simplify right side
    2,812.32x = 6,566,313.33
  5. Step 5: Solve for x
    x = 6,566,313.33/2,812.32
  6. Step 6: Final answer
    x = 2,334.84

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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.