Home / 2,157.73-2,977.58-1,213.60

Finding the Fourth Proportional to 2,157.73, 2,977.58 and 1,213.60

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Solution

The fourth proportional to 2,157.73, 2,977.58 and 1,213.60 is: 1,674.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,157.73 : 2,977.58 = 1,213.60 : x
  2. Step 2: Convert to fraction form
    2,157.73/2,977.58 = 1,213.60/x
  3. Step 3: Cross multiply
    2,157.73x = 2,977.58 × 1,213.60
  4. Step 4: Simplify right side
    2,157.73x = 3,613,577.58
  5. Step 5: Solve for x
    x = 3,613,577.58/2,157.73
  6. Step 6: Final answer
    x = 1,674.71

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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.