Home / 3,086.52-4,259.48-1,689.36

Finding the Fourth Proportional to 3,086.52, 4,259.48 and 1,689.36

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Solution

The fourth proportional to 3,086.52, 4,259.48 and 1,689.36 is: 2,331.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,086.52 : 4,259.48 = 1,689.36 : x
  2. Step 2: Convert to fraction form
    3,086.52/4,259.48 = 1,689.36/x
  3. Step 3: Cross multiply
    3,086.52x = 4,259.48 × 1,689.36
  4. Step 4: Simplify right side
    3,086.52x = 7,195,795.13
  5. Step 5: Solve for x
    x = 7,195,795.13/3,086.52
  6. Step 6: Final answer
    x = 2,331.36

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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.