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Finding the Fourth Proportional to 5,137.56, 7,653.78 and 4,889.88

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Solution

The fourth proportional to 5,137.56, 7,653.78 and 4,889.88 is: 7,284.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,137.56 : 7,653.78 = 4,889.88 : x
  2. Step 2: Convert to fraction form
    5,137.56/7,653.78 = 4,889.88/x
  3. Step 3: Cross multiply
    5,137.56x = 7,653.78 × 4,889.88
  4. Step 4: Simplify right side
    5,137.56x = 37,426,065.75
  5. Step 5: Solve for x
    x = 37,426,065.75/5,137.56
  6. Step 6: Final answer
    x = 7,284.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.