Home / 1,914.36-2,641.85-1,128.41

Finding the Fourth Proportional to 1,914.36, 2,641.85 and 1,128.41

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Solution

The fourth proportional to 1,914.36, 2,641.85 and 1,128.41 is: 1,557.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,914.36 : 2,641.85 = 1,128.41 : x
  2. Step 2: Convert to fraction form
    1,914.36/2,641.85 = 1,128.41/x
  3. Step 3: Cross multiply
    1,914.36x = 2,641.85 × 1,128.41
  4. Step 4: Simplify right side
    1,914.36x = 2,981,089.96
  5. Step 5: Solve for x
    x = 2,981,089.96/1,914.36
  6. Step 6: Final answer
    x = 1,557.23

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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.