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Finding the Fourth Proportional to 7,915.44, 11,865.06 and 4,017.72

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Solution

The fourth proportional to 7,915.44, 11,865.06 and 4,017.72 is: 6,022.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,915.44 : 11,865.06 = 4,017.72 : x
  2. Step 2: Convert to fraction form
    7,915.44/11,865.06 = 4,017.72/x
  3. Step 3: Cross multiply
    7,915.44x = 11,865.06 × 4,017.72
  4. Step 4: Simplify right side
    7,915.44x = 47,670,488.86
  5. Step 5: Solve for x
    x = 47,670,488.86/7,915.44
  6. Step 6: Final answer
    x = 6,022.47

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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.