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Finding the Fourth Proportional to 1,326.18, 1,828.91 and 853.25

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Solution

The fourth proportional to 1,326.18, 1,828.91 and 853.25 is: 1,176.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326.18 : 1,828.91 = 853.25 : x
  2. Step 2: Convert to fraction form
    1,326.18/1,828.91 = 853.25/x
  3. Step 3: Cross multiply
    1,326.18x = 1,828.91 × 853.25
  4. Step 4: Simplify right side
    1,326.18x = 1,560,508.31
  5. Step 5: Solve for x
    x = 1,560,508.31/1,326.18
  6. Step 6: Final answer
    x = 1,176.69

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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.