Home / 4,112.51-6,129.67-3,878.98

Finding the Fourth Proportional to 4,112.51, 6,129.67 and 3,878.98

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Solution

The fourth proportional to 4,112.51, 6,129.67 and 3,878.98 is: 5,781.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,112.51 : 6,129.67 = 3,878.98 : x
  2. Step 2: Convert to fraction form
    4,112.51/6,129.67 = 3,878.98/x
  3. Step 3: Cross multiply
    4,112.51x = 6,129.67 × 3,878.98
  4. Step 4: Simplify right side
    4,112.51x = 23,776,817.29
  5. Step 5: Solve for x
    x = 23,776,817.29/4,112.51
  6. Step 6: Final answer
    x = 5,781.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.