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Finding the Fourth Proportional to 4,915.58, 7,370.64 and 1,627.79

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Solution

The fourth proportional to 4,915.58, 7,370.64 and 1,627.79 is: 2,440.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,915.58 : 7,370.64 = 1,627.79 : x
  2. Step 2: Convert to fraction form
    4,915.58/7,370.64 = 1,627.79/x
  3. Step 3: Cross multiply
    4,915.58x = 7,370.64 × 1,627.79
  4. Step 4: Simplify right side
    4,915.58x = 11,997,872.51
  5. Step 5: Solve for x
    x = 11,997,872.51/4,915.58
  6. Step 6: Final answer
    x = 2,440.78

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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.