Home / 2,145.44-2,956.56-1,445.60

Finding the Fourth Proportional to 2,145.44, 2,956.56 and 1,445.60

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Solution

The fourth proportional to 2,145.44, 2,956.56 and 1,445.60 is: 1,992.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145.44 : 2,956.56 = 1,445.60 : x
  2. Step 2: Convert to fraction form
    2,145.44/2,956.56 = 1,445.60/x
  3. Step 3: Cross multiply
    2,145.44x = 2,956.56 × 1,445.60
  4. Step 4: Simplify right side
    2,145.44x = 4,274,003.14
  5. Step 5: Solve for x
    x = 4,274,003.14/2,145.44
  6. Step 6: Final answer
    x = 1,992.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.