Home / 2,146.45-3,216.75-1,313.79

Finding the Fourth Proportional to 2,146.45, 3,216.75 and 1,313.79

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Solution

The fourth proportional to 2,146.45, 3,216.75 and 1,313.79 is: 1,968.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,146.45 : 3,216.75 = 1,313.79 : x
  2. Step 2: Convert to fraction form
    2,146.45/3,216.75 = 1,313.79/x
  3. Step 3: Cross multiply
    2,146.45x = 3,216.75 × 1,313.79
  4. Step 4: Simplify right side
    2,146.45x = 4,226,144.13
  5. Step 5: Solve for x
    x = 4,226,144.13/2,146.45
  6. Step 6: Final answer
    x = 1,968.90

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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.