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Finding the Fourth Proportional to 4,945, 7,410.94 and 4,124.88

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Solution

The fourth proportional to 4,945, 7,410.94 and 4,124.88 is: 6,181.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,945 : 7,410.94 = 4,124.88 : x
  2. Step 2: Convert to fraction form
    4,945/7,410.94 = 4,124.88/x
  3. Step 3: Cross multiply
    4,945x = 7,410.94 × 4,124.88
  4. Step 4: Simplify right side
    4,945x = 30,569,238.19
  5. Step 5: Solve for x
    x = 30,569,238.19/4,945
  6. Step 6: Final answer
    x = 6,181.85

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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.