Home / 1,647.54-2,273.56-919.86

Finding the Fourth Proportional to 1,647.54, 2,273.56 and 919.86

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Solution

The fourth proportional to 1,647.54, 2,273.56 and 919.86 is: 1,269.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,647.54 : 2,273.56 = 919.86 : x
  2. Step 2: Convert to fraction form
    1,647.54/2,273.56 = 919.86/x
  3. Step 3: Cross multiply
    1,647.54x = 2,273.56 × 919.86
  4. Step 4: Simplify right side
    1,647.54x = 2,091,356.90
  5. Step 5: Solve for x
    x = 2,091,356.90/1,647.54
  6. Step 6: Final answer
    x = 1,269.38

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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.