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Finding the Fourth Proportional to 2,840.87, 4,262 and 893.08

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Solution

The fourth proportional to 2,840.87, 4,262 and 893.08 is: 1,339.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,840.87 : 4,262 = 893.08 : x
  2. Step 2: Convert to fraction form
    2,840.87/4,262 = 893.08/x
  3. Step 3: Cross multiply
    2,840.87x = 4,262 × 893.08
  4. Step 4: Simplify right side
    2,840.87x = 3,806,306.96
  5. Step 5: Solve for x
    x = 3,806,306.96/2,840.87
  6. Step 6: Final answer
    x = 1,339.84

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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.