Home / 4,160.75-6,239.78-1,386.68

Finding the Fourth Proportional to 4,160.75, 6,239.78 and 1,386.68

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Solution

The fourth proportional to 4,160.75, 6,239.78 and 1,386.68 is: 2,079.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,160.75 : 6,239.78 = 1,386.68 : x
  2. Step 2: Convert to fraction form
    4,160.75/6,239.78 = 1,386.68/x
  3. Step 3: Cross multiply
    4,160.75x = 6,239.78 × 1,386.68
  4. Step 4: Simplify right side
    4,160.75x = 8,652,578.13
  5. Step 5: Solve for x
    x = 8,652,578.13/4,160.75
  6. Step 6: Final answer
    x = 2,079.57

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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.