Home / 3,040.80-4,196.31-1,643.55

Finding the Fourth Proportional to 3,040.80, 4,196.31 and 1,643.55

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Solution

The fourth proportional to 3,040.80, 4,196.31 and 1,643.55 is: 2,268.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,040.80 : 4,196.31 = 1,643.55 : x
  2. Step 2: Convert to fraction form
    3,040.80/4,196.31 = 1,643.55/x
  3. Step 3: Cross multiply
    3,040.80x = 4,196.31 × 1,643.55
  4. Step 4: Simplify right side
    3,040.80x = 6,896,845.30
  5. Step 5: Solve for x
    x = 6,896,845.30/3,040.80
  6. Step 6: Final answer
    x = 2,268.10

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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.