Home / 3,990.23-5,986.06-1,357.60

Finding the Fourth Proportional to 3,990.23, 5,986.06 and 1,357.60

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Solution

The fourth proportional to 3,990.23, 5,986.06 and 1,357.60 is: 2,036.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990.23 : 5,986.06 = 1,357.60 : x
  2. Step 2: Convert to fraction form
    3,990.23/5,986.06 = 1,357.60/x
  3. Step 3: Cross multiply
    3,990.23x = 5,986.06 × 1,357.60
  4. Step 4: Simplify right side
    3,990.23x = 8,126,679.14
  5. Step 5: Solve for x
    x = 8,126,679.14/3,990.23
  6. Step 6: Final answer
    x = 2,036.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.