Home / 4,761.85-7,143.90-1,986.98

Finding the Fourth Proportional to 4,761.85, 7,143.90 and 1,986.98

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Solution

The fourth proportional to 4,761.85, 7,143.90 and 1,986.98 is: 2,980.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,761.85 : 7,143.90 = 1,986.98 : x
  2. Step 2: Convert to fraction form
    4,761.85/7,143.90 = 1,986.98/x
  3. Step 3: Cross multiply
    4,761.85x = 7,143.90 × 1,986.98
  4. Step 4: Simplify right side
    4,761.85x = 14,194,750.70
  5. Step 5: Solve for x
    x = 14,194,750.70/4,761.85
  6. Step 6: Final answer
    x = 2,980.94

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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.