Home / 4,692.20-7,037.40-1,405.40

Finding the Fourth Proportional to 4,692.20, 7,037.40 and 1,405.40

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Solution

The fourth proportional to 4,692.20, 7,037.40 and 1,405.40 is: 2,107.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,692.20 : 7,037.40 = 1,405.40 : x
  2. Step 2: Convert to fraction form
    4,692.20/7,037.40 = 1,405.40/x
  3. Step 3: Cross multiply
    4,692.20x = 7,037.40 × 1,405.40
  4. Step 4: Simplify right side
    4,692.20x = 9,890,361.96
  5. Step 5: Solve for x
    x = 9,890,361.96/4,692.20
  6. Step 6: Final answer
    x = 2,107.83

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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.