Home / 2,930.45-4,396.44-1,287.32

Finding the Fourth Proportional to 2,930.45, 4,396.44 and 1,287.32

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Solution

The fourth proportional to 2,930.45, 4,396.44 and 1,287.32 is: 1,931.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,930.45 : 4,396.44 = 1,287.32 : x
  2. Step 2: Convert to fraction form
    2,930.45/4,396.44 = 1,287.32/x
  3. Step 3: Cross multiply
    2,930.45x = 4,396.44 × 1,287.32
  4. Step 4: Simplify right side
    2,930.45x = 5,659,625.14
  5. Step 5: Solve for x
    x = 5,659,625.14/2,930.45
  6. Step 6: Final answer
    x = 1,931.32

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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.