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Finding the Fourth Proportional to 1,857.35, 2,785.93 and 624.67

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Solution

The fourth proportional to 1,857.35, 2,785.93 and 624.67 is: 936.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,857.35 : 2,785.93 = 624.67 : x
  2. Step 2: Convert to fraction form
    1,857.35/2,785.93 = 624.67/x
  3. Step 3: Cross multiply
    1,857.35x = 2,785.93 × 624.67
  4. Step 4: Simplify right side
    1,857.35x = 1,740,286.89
  5. Step 5: Solve for x
    x = 1,740,286.89/1,857.35
  6. Step 6: Final answer
    x = 936.97

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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.