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Finding the Fourth Proportional to 2,837.50, 3,915.50 and 1,578.44

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Solution

The fourth proportional to 2,837.50, 3,915.50 and 1,578.44 is: 2,178.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,837.50 : 3,915.50 = 1,578.44 : x
  2. Step 2: Convert to fraction form
    2,837.50/3,915.50 = 1,578.44/x
  3. Step 3: Cross multiply
    2,837.50x = 3,915.50 × 1,578.44
  4. Step 4: Simplify right side
    2,837.50x = 6,180,383.72
  5. Step 5: Solve for x
    x = 6,180,383.72/2,837.50
  6. Step 6: Final answer
    x = 2,178.11

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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.