Home / 1,627.28-2,245.56-919.08

Finding the Fourth Proportional to 1,627.28, 2,245.56 and 919.08

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Solution

The fourth proportional to 1,627.28, 2,245.56 and 919.08 is: 1,268.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,627.28 : 2,245.56 = 919.08 : x
  2. Step 2: Convert to fraction form
    1,627.28/2,245.56 = 919.08/x
  3. Step 3: Cross multiply
    1,627.28x = 2,245.56 × 919.08
  4. Step 4: Simplify right side
    1,627.28x = 2,063,849.28
  5. Step 5: Solve for x
    x = 2,063,849.28/1,627.28
  6. Step 6: Final answer
    x = 1,268.28

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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.