Home / 4,415.81-6,623.48-1,128.69

Finding the Fourth Proportional to 4,415.81, 6,623.48 and 1,128.69

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Solution

The fourth proportional to 4,415.81, 6,623.48 and 1,128.69 is: 1,692.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,415.81 : 6,623.48 = 1,128.69 : x
  2. Step 2: Convert to fraction form
    4,415.81/6,623.48 = 1,128.69/x
  3. Step 3: Cross multiply
    4,415.81x = 6,623.48 × 1,128.69
  4. Step 4: Simplify right side
    4,415.81x = 7,475,850.00
  5. Step 5: Solve for x
    x = 7,475,850.00/4,415.81
  6. Step 6: Final answer
    x = 1,692.98

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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.