Home / 3,927.39-5,889.60-1,978.26

Finding the Fourth Proportional to 3,927.39, 5,889.60 and 1,978.26

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Solution

The fourth proportional to 3,927.39, 5,889.60 and 1,978.26 is: 2,966.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,927.39 : 5,889.60 = 1,978.26 : x
  2. Step 2: Convert to fraction form
    3,927.39/5,889.60 = 1,978.26/x
  3. Step 3: Cross multiply
    3,927.39x = 5,889.60 × 1,978.26
  4. Step 4: Simplify right side
    3,927.39x = 11,651,160.10
  5. Step 5: Solve for x
    x = 11,651,160.10/3,927.39
  6. Step 6: Final answer
    x = 2,966.64

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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.