Home / 1,917.44-2,875.26-618.56

Finding the Fourth Proportional to 1,917.44, 2,875.26 and 618.56

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Solution

The fourth proportional to 1,917.44, 2,875.26 and 618.56 is: 927.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.44 : 2,875.26 = 618.56 : x
  2. Step 2: Convert to fraction form
    1,917.44/2,875.26 = 618.56/x
  3. Step 3: Cross multiply
    1,917.44x = 2,875.26 × 618.56
  4. Step 4: Simplify right side
    1,917.44x = 1,778,520.83
  5. Step 5: Solve for x
    x = 1,778,520.83/1,917.44
  6. Step 6: Final answer
    x = 927.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.