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Finding the Fourth Proportional to 3,052.33, 4,578.66 and 861.23

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Solution

The fourth proportional to 3,052.33, 4,578.66 and 861.23 is: 1,291.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,052.33 : 4,578.66 = 861.23 : x
  2. Step 2: Convert to fraction form
    3,052.33/4,578.66 = 861.23/x
  3. Step 3: Cross multiply
    3,052.33x = 4,578.66 × 861.23
  4. Step 4: Simplify right side
    3,052.33x = 3,943,275.05
  5. Step 5: Solve for x
    x = 3,943,275.05/3,052.33
  6. Step 6: Final answer
    x = 1,291.89

Related Problems

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Double scale
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Similar ratio
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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.