Home / 9,231.47-12,739.43-5,039.72

Finding the Fourth Proportional to 9,231.47, 12,739.43 and 5,039.72

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Solution

The fourth proportional to 9,231.47, 12,739.43 and 5,039.72 is: 6,954.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,231.47 : 12,739.43 = 5,039.72 : x
  2. Step 2: Convert to fraction form
    9,231.47/12,739.43 = 5,039.72/x
  3. Step 3: Cross multiply
    9,231.47x = 12,739.43 × 5,039.72
  4. Step 4: Simplify right side
    9,231.47x = 64,203,128.49
  5. Step 5: Solve for x
    x = 64,203,128.49/9,231.47
  6. Step 6: Final answer
    x = 6,954.81

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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.