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Finding the Fourth Proportional to 2,570.39, 3,855.60 and 622.61

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Solution

The fourth proportional to 2,570.39, 3,855.60 and 622.61 is: 933.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,570.39 : 3,855.60 = 622.61 : x
  2. Step 2: Convert to fraction form
    2,570.39/3,855.60 = 622.61/x
  3. Step 3: Cross multiply
    2,570.39x = 3,855.60 × 622.61
  4. Step 4: Simplify right side
    2,570.39x = 2,400,515.84
  5. Step 5: Solve for x
    x = 2,400,515.84/2,570.39
  6. Step 6: Final answer
    x = 933.91

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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.