Home / 4,078.51-6,119.78-1,615.09

Finding the Fourth Proportional to 4,078.51, 6,119.78 and 1,615.09

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Solution

The fourth proportional to 4,078.51, 6,119.78 and 1,615.09 is: 2,423.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,078.51 : 6,119.78 = 1,615.09 : x
  2. Step 2: Convert to fraction form
    4,078.51/6,119.78 = 1,615.09/x
  3. Step 3: Cross multiply
    4,078.51x = 6,119.78 × 1,615.09
  4. Step 4: Simplify right side
    4,078.51x = 9,883,995.48
  5. Step 5: Solve for x
    x = 9,883,995.48/4,078.51
  6. Step 6: Final answer
    x = 2,423.43

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1.5x scale

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.