Home / 5,138.51-7,084.09-3,249.15

Finding the Fourth Proportional to 5,138.51, 7,084.09 and 3,249.15

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Solution

The fourth proportional to 5,138.51, 7,084.09 and 3,249.15 is: 4,479.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.51 : 7,084.09 = 3,249.15 : x
  2. Step 2: Convert to fraction form
    5,138.51/7,084.09 = 3,249.15/x
  3. Step 3: Cross multiply
    5,138.51x = 7,084.09 × 3,249.15
  4. Step 4: Simplify right side
    5,138.51x = 23,017,271.02
  5. Step 5: Solve for x
    x = 23,017,271.02/5,138.51
  6. Step 6: Final answer
    x = 4,479.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.