Home / 3,150.40-4,347.80-2,086.36

Finding the Fourth Proportional to 3,150.40, 4,347.80 and 2,086.36

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Solution

The fourth proportional to 3,150.40, 4,347.80 and 2,086.36 is: 2,879.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,150.40 : 4,347.80 = 2,086.36 : x
  2. Step 2: Convert to fraction form
    3,150.40/4,347.80 = 2,086.36/x
  3. Step 3: Cross multiply
    3,150.40x = 4,347.80 × 2,086.36
  4. Step 4: Simplify right side
    3,150.40x = 9,071,076.01
  5. Step 5: Solve for x
    x = 9,071,076.01/3,150.40
  6. Step 6: Final answer
    x = 2,879.34

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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.