Home / 9,987.37-13,783.20-5,739.79

Finding the Fourth Proportional to 9,987.37, 13,783.20 and 5,739.79

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Solution

The fourth proportional to 9,987.37, 13,783.20 and 5,739.79 is: 7,921.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,987.37 : 13,783.20 = 5,739.79 : x
  2. Step 2: Convert to fraction form
    9,987.37/13,783.20 = 5,739.79/x
  3. Step 3: Cross multiply
    9,987.37x = 13,783.20 × 5,739.79
  4. Step 4: Simplify right side
    9,987.37x = 79,112,673.53
  5. Step 5: Solve for x
    x = 79,112,673.53/9,987.37
  6. Step 6: Final answer
    x = 7,921.27

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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.