Home / 1,227.51-1,828.85-1,165.55

Finding the Fourth Proportional to 1,227.51, 1,828.85 and 1,165.55

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Solution

The fourth proportional to 1,227.51, 1,828.85 and 1,165.55 is: 1,736.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,227.51 : 1,828.85 = 1,165.55 : x
  2. Step 2: Convert to fraction form
    1,227.51/1,828.85 = 1,165.55/x
  3. Step 3: Cross multiply
    1,227.51x = 1,828.85 × 1,165.55
  4. Step 4: Simplify right side
    1,227.51x = 2,131,601.15
  5. Step 5: Solve for x
    x = 2,131,601.15/1,227.51
  6. Step 6: Final answer
    x = 1,736.52

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.