Home / 2,840.16-3,918.96-1,791.84

Finding the Fourth Proportional to 2,840.16, 3,918.96 and 1,791.84

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Solution

The fourth proportional to 2,840.16, 3,918.96 and 1,791.84 is: 2,472.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,840.16 : 3,918.96 = 1,791.84 : x
  2. Step 2: Convert to fraction form
    2,840.16/3,918.96 = 1,791.84/x
  3. Step 3: Cross multiply
    2,840.16x = 3,918.96 × 1,791.84
  4. Step 4: Simplify right side
    2,840.16x = 7,022,149.29
  5. Step 5: Solve for x
    x = 7,022,149.29/2,840.16
  6. Step 6: Final answer
    x = 2,472.45

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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.