Home / 3,889.63-5,365.20-2,615.64

Finding the Fourth Proportional to 3,889.63, 5,365.20 and 2,615.64

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Solution

The fourth proportional to 3,889.63, 5,365.20 and 2,615.64 is: 3,607.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,889.63 : 5,365.20 = 2,615.64 : x
  2. Step 2: Convert to fraction form
    3,889.63/5,365.20 = 2,615.64/x
  3. Step 3: Cross multiply
    3,889.63x = 5,365.20 × 2,615.64
  4. Step 4: Simplify right side
    3,889.63x = 14,033,431.73
  5. Step 5: Solve for x
    x = 14,033,431.73/3,889.63
  6. Step 6: Final answer
    x = 3,607.91

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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.