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Finding the Fourth Proportional to 7,076.14, 9,764.94 and 3,889.51

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Solution

The fourth proportional to 7,076.14, 9,764.94 and 3,889.51 is: 5,367.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,076.14 : 9,764.94 = 3,889.51 : x
  2. Step 2: Convert to fraction form
    7,076.14/9,764.94 = 3,889.51/x
  3. Step 3: Cross multiply
    7,076.14x = 9,764.94 × 3,889.51
  4. Step 4: Simplify right side
    7,076.14x = 37,980,831.78
  5. Step 5: Solve for x
    x = 37,980,831.78/7,076.14
  6. Step 6: Final answer
    x = 5,367.45

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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.