Home / 3,970.68-5,945.07-2,656.42

Finding the Fourth Proportional to 3,970.68, 5,945.07 and 2,656.42

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Solution

The fourth proportional to 3,970.68, 5,945.07 and 2,656.42 is: 3,977.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.68 : 5,945.07 = 2,656.42 : x
  2. Step 2: Convert to fraction form
    3,970.68/5,945.07 = 2,656.42/x
  3. Step 3: Cross multiply
    3,970.68x = 5,945.07 × 2,656.42
  4. Step 4: Simplify right side
    3,970.68x = 15,792,602.85
  5. Step 5: Solve for x
    x = 15,792,602.85/3,970.68
  6. Step 6: Final answer
    x = 3,977.30

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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.