Home / 1,640.19-2,263.43-894.15

Finding the Fourth Proportional to 1,640.19, 2,263.43 and 894.15

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Solution

The fourth proportional to 1,640.19, 2,263.43 and 894.15 is: 1,233.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640.19 : 2,263.43 = 894.15 : x
  2. Step 2: Convert to fraction form
    1,640.19/2,263.43 = 894.15/x
  3. Step 3: Cross multiply
    1,640.19x = 2,263.43 × 894.15
  4. Step 4: Simplify right side
    1,640.19x = 2,023,836.85
  5. Step 5: Solve for x
    x = 2,023,836.85/1,640.19
  6. Step 6: Final answer
    x = 1,233.91

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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.