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Finding the Fourth Proportional to 5,010.80, 6,915.04 and 2,772.80

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Solution

The fourth proportional to 5,010.80, 6,915.04 and 2,772.80 is: 3,826.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,010.80 : 6,915.04 = 2,772.80 : x
  2. Step 2: Convert to fraction form
    5,010.80/6,915.04 = 2,772.80/x
  3. Step 3: Cross multiply
    5,010.80x = 6,915.04 × 2,772.80
  4. Step 4: Simplify right side
    5,010.80x = 19,174,022.91
  5. Step 5: Solve for x
    x = 19,174,022.91/5,010.80
  6. Step 6: Final answer
    x = 3,826.54

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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.