Home / 8,939.36-12,335.76-5,400.48

Finding the Fourth Proportional to 8,939.36, 12,335.76 and 5,400.48

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Solution

The fourth proportional to 8,939.36, 12,335.76 and 5,400.48 is: 7,452.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,939.36 : 12,335.76 = 5,400.48 : x
  2. Step 2: Convert to fraction form
    8,939.36/12,335.76 = 5,400.48/x
  3. Step 3: Cross multiply
    8,939.36x = 12,335.76 × 5,400.48
  4. Step 4: Simplify right side
    8,939.36x = 66,619,025.16
  5. Step 5: Solve for x
    x = 66,619,025.16/8,939.36
  6. Step 6: Final answer
    x = 7,452.33

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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.