Home / 6,297.72-9,446.40-1,915.20

Finding the Fourth Proportional to 6,297.72, 9,446.40 and 1,915.20

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Solution

The fourth proportional to 6,297.72, 9,446.40 and 1,915.20 is: 2,872.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,297.72 : 9,446.40 = 1,915.20 : x
  2. Step 2: Convert to fraction form
    6,297.72/9,446.40 = 1,915.20/x
  3. Step 3: Cross multiply
    6,297.72x = 9,446.40 × 1,915.20
  4. Step 4: Simplify right side
    6,297.72x = 18,091,745.28
  5. Step 5: Solve for x
    x = 18,091,745.28/6,297.72
  6. Step 6: Final answer
    x = 2,872.75

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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.