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Finding the Fourth Proportional to 5,119.36, 7,068.16 and 3,865.48

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Solution

The fourth proportional to 5,119.36, 7,068.16 and 3,865.48 is: 5,336.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,119.36 : 7,068.16 = 3,865.48 : x
  2. Step 2: Convert to fraction form
    5,119.36/7,068.16 = 3,865.48/x
  3. Step 3: Cross multiply
    5,119.36x = 7,068.16 × 3,865.48
  4. Step 4: Simplify right side
    5,119.36x = 27,321,831.12
  5. Step 5: Solve for x
    x = 27,321,831.12/5,119.36
  6. Step 6: Final answer
    x = 5,336.96

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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.