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Finding the Fourth Proportional to 2,953.67, 4,425.84 and 1,855.91

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Solution

The fourth proportional to 2,953.67, 4,425.84 and 1,855.91 is: 2,780.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,953.67 : 4,425.84 = 1,855.91 : x
  2. Step 2: Convert to fraction form
    2,953.67/4,425.84 = 1,855.91/x
  3. Step 3: Cross multiply
    2,953.67x = 4,425.84 × 1,855.91
  4. Step 4: Simplify right side
    2,953.67x = 8,213,971.78
  5. Step 5: Solve for x
    x = 8,213,971.78/2,953.67
  6. Step 6: Final answer
    x = 2,780.94

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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.