Home / 2,656.08-3,986.68-1,970

Finding the Fourth Proportional to 2,656.08, 3,986.68 and 1,970

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Solution

The fourth proportional to 2,656.08, 3,986.68 and 1,970 is: 2,956.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,656.08 : 3,986.68 = 1,970 : x
  2. Step 2: Convert to fraction form
    2,656.08/3,986.68 = 1,970/x
  3. Step 3: Cross multiply
    2,656.08x = 3,986.68 × 1,970
  4. Step 4: Simplify right side
    2,656.08x = 7,853,759.60
  5. Step 5: Solve for x
    x = 7,853,759.60/2,656.08
  6. Step 6: Final answer
    x = 2,956.90

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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.