Home / 2,837.21-3,915.11-1,578.17

Finding the Fourth Proportional to 2,837.21, 3,915.11 and 1,578.17

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Solution

The fourth proportional to 2,837.21, 3,915.11 and 1,578.17 is: 2,177.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,837.21 : 3,915.11 = 1,578.17 : x
  2. Step 2: Convert to fraction form
    2,837.21/3,915.11 = 1,578.17/x
  3. Step 3: Cross multiply
    2,837.21x = 3,915.11 × 1,578.17
  4. Step 4: Simplify right side
    2,837.21x = 6,178,709.15
  5. Step 5: Solve for x
    x = 6,178,709.15/2,837.21
  6. Step 6: Final answer
    x = 2,177.74

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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.