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Finding the Fourth Proportional to 3,896.76, 5,840.80 and 1,556.16

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Solution

The fourth proportional to 3,896.76, 5,840.80 and 1,556.16 is: 2,332.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,896.76 : 5,840.80 = 1,556.16 : x
  2. Step 2: Convert to fraction form
    3,896.76/5,840.80 = 1,556.16/x
  3. Step 3: Cross multiply
    3,896.76x = 5,840.80 × 1,556.16
  4. Step 4: Simplify right side
    3,896.76x = 9,089,215.44
  5. Step 5: Solve for x
    x = 9,089,215.44/3,896.76
  6. Step 6: Final answer
    x = 2,332.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.