Home / 1,974.20-2,958.60-1,314.20

Finding the Fourth Proportional to 1,974.20, 2,958.60 and 1,314.20

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Solution

The fourth proportional to 1,974.20, 2,958.60 and 1,314.20 is: 1,969.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,974.20 : 2,958.60 = 1,314.20 : x
  2. Step 2: Convert to fraction form
    1,974.20/2,958.60 = 1,314.20/x
  3. Step 3: Cross multiply
    1,974.20x = 2,958.60 × 1,314.20
  4. Step 4: Simplify right side
    1,974.20x = 3,888,192.12
  5. Step 5: Solve for x
    x = 3,888,192.12/1,974.20
  6. Step 6: Final answer
    x = 1,969.50

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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.