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Finding the Fourth Proportional to 4,620.94, 6,921.60 and 4,290.46

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Solution

The fourth proportional to 4,620.94, 6,921.60 and 4,290.46 is: 6,426.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,620.94 : 6,921.60 = 4,290.46 : x
  2. Step 2: Convert to fraction form
    4,620.94/6,921.60 = 4,290.46/x
  3. Step 3: Cross multiply
    4,620.94x = 6,921.60 × 4,290.46
  4. Step 4: Simplify right side
    4,620.94x = 29,696,847.94
  5. Step 5: Solve for x
    x = 29,696,847.94/4,620.94
  6. Step 6: Final answer
    x = 6,426.58

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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.