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Finding the Fourth Proportional to 3,084.90, 4,626 and 893.58

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Solution

The fourth proportional to 3,084.90, 4,626 and 893.58 is: 1,339.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,084.90 : 4,626 = 893.58 : x
  2. Step 2: Convert to fraction form
    3,084.90/4,626 = 893.58/x
  3. Step 3: Cross multiply
    3,084.90x = 4,626 × 893.58
  4. Step 4: Simplify right side
    3,084.90x = 4,133,701.08
  5. Step 5: Solve for x
    x = 4,133,701.08/3,084.90
  6. Step 6: Final answer
    x = 1,339.98

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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.