Home / 4,120.75-6,181.13-1,384.75

Finding the Fourth Proportional to 4,120.75, 6,181.13 and 1,384.75

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Solution

The fourth proportional to 4,120.75, 6,181.13 and 1,384.75 is: 2,077.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,120.75 : 6,181.13 = 1,384.75 : x
  2. Step 2: Convert to fraction form
    4,120.75/6,181.13 = 1,384.75/x
  3. Step 3: Cross multiply
    4,120.75x = 6,181.13 × 1,384.75
  4. Step 4: Simplify right side
    4,120.75x = 8,559,319.77
  5. Step 5: Solve for x
    x = 8,559,319.77/4,120.75
  6. Step 6: Final answer
    x = 2,077.13

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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.