Home / 1,627.37-2,245.64-919.39

Finding the Fourth Proportional to 1,627.37, 2,245.64 and 919.39

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Solution

The fourth proportional to 1,627.37, 2,245.64 and 919.39 is: 1,268.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,627.37 : 2,245.64 = 919.39 : x
  2. Step 2: Convert to fraction form
    1,627.37/2,245.64 = 919.39/x
  3. Step 3: Cross multiply
    1,627.37x = 2,245.64 × 919.39
  4. Step 4: Simplify right side
    1,627.37x = 2,064,618.96
  5. Step 5: Solve for x
    x = 2,064,618.96/1,627.37
  6. Step 6: Final answer
    x = 1,268.68

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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.