Home / 4,161.78-6,240.59-1,387.49

Finding the Fourth Proportional to 4,161.78, 6,240.59 and 1,387.49

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Solution

The fourth proportional to 4,161.78, 6,240.59 and 1,387.49 is: 2,080.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,161.78 : 6,240.59 = 1,387.49 : x
  2. Step 2: Convert to fraction form
    4,161.78/6,240.59 = 1,387.49/x
  3. Step 3: Cross multiply
    4,161.78x = 6,240.59 × 1,387.49
  4. Step 4: Simplify right side
    4,161.78x = 8,658,756.22
  5. Step 5: Solve for x
    x = 8,658,756.22/4,161.78
  6. Step 6: Final answer
    x = 2,080.54

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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.