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Finding the Fourth Proportional to 3,405, 4,699.50 and 2,228.58

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Solution

The fourth proportional to 3,405, 4,699.50 and 2,228.58 is: 3,075.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,405 : 4,699.50 = 2,228.58 : x
  2. Step 2: Convert to fraction form
    3,405/4,699.50 = 2,228.58/x
  3. Step 3: Cross multiply
    3,405x = 4,699.50 × 2,228.58
  4. Step 4: Simplify right side
    3,405x = 10,473,211.71
  5. Step 5: Solve for x
    x = 10,473,211.71/3,405
  6. Step 6: Final answer
    x = 3,075.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.