Home / 4,161.08-6,239.56-1,386.80

Finding the Fourth Proportional to 4,161.08, 6,239.56 and 1,386.80

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Solution

The fourth proportional to 4,161.08, 6,239.56 and 1,386.80 is: 2,079.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,161.08 : 6,239.56 = 1,386.80 : x
  2. Step 2: Convert to fraction form
    4,161.08/6,239.56 = 1,386.80/x
  3. Step 3: Cross multiply
    4,161.08x = 6,239.56 × 1,386.80
  4. Step 4: Simplify right side
    4,161.08x = 8,653,021.81
  5. Step 5: Solve for x
    x = 8,653,021.81/4,161.08
  6. Step 6: Final answer
    x = 2,079.51

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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.