Home / 9,986.79-13,782.44-5,739.25

Finding the Fourth Proportional to 9,986.79, 13,782.44 and 5,739.25

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Solution

The fourth proportional to 9,986.79, 13,782.44 and 5,739.25 is: 7,920.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,986.79 : 13,782.44 = 5,739.25 : x
  2. Step 2: Convert to fraction form
    9,986.79/13,782.44 = 5,739.25/x
  3. Step 3: Cross multiply
    9,986.79x = 13,782.44 × 5,739.25
  4. Step 4: Simplify right side
    9,986.79x = 79,100,840.07
  5. Step 5: Solve for x
    x = 79,100,840.07/9,986.79
  6. Step 6: Final answer
    x = 7,920.55

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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.