Home / 4,127-6,189.78-1,661.18

Finding the Fourth Proportional to 4,127, 6,189.78 and 1,661.18

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Solution

The fourth proportional to 4,127, 6,189.78 and 1,661.18 is: 2,491.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,127 : 6,189.78 = 1,661.18 : x
  2. Step 2: Convert to fraction form
    4,127/6,189.78 = 1,661.18/x
  3. Step 3: Cross multiply
    4,127x = 6,189.78 × 1,661.18
  4. Step 4: Simplify right side
    4,127x = 10,282,338.74
  5. Step 5: Solve for x
    x = 10,282,338.74/4,127
  6. Step 6: Final answer
    x = 2,491.48

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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.