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Finding the Fourth Proportional to 4,809.09, 6,621.74 and 4,099.34

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Solution

The fourth proportional to 4,809.09, 6,621.74 and 4,099.34 is: 5,644.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,809.09 : 6,621.74 = 4,099.34 : x
  2. Step 2: Convert to fraction form
    4,809.09/6,621.74 = 4,099.34/x
  3. Step 3: Cross multiply
    4,809.09x = 6,621.74 × 4,099.34
  4. Step 4: Simplify right side
    4,809.09x = 27,144,782.77
  5. Step 5: Solve for x
    x = 27,144,782.77/4,809.09
  6. Step 6: Final answer
    x = 5,644.47

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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.