Home / 3,086.93-4,259.80-1,689.41

Finding the Fourth Proportional to 3,086.93, 4,259.80 and 1,689.41

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Solution

The fourth proportional to 3,086.93, 4,259.80 and 1,689.41 is: 2,331.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,086.93 : 4,259.80 = 1,689.41 : x
  2. Step 2: Convert to fraction form
    3,086.93/4,259.80 = 1,689.41/x
  3. Step 3: Cross multiply
    3,086.93x = 4,259.80 × 1,689.41
  4. Step 4: Simplify right side
    3,086.93x = 7,196,548.72
  5. Step 5: Solve for x
    x = 7,196,548.72/3,086.93
  6. Step 6: Final answer
    x = 2,331.30

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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.