Home / 3,891.34-5,833.75-1,698.40

Finding the Fourth Proportional to 3,891.34, 5,833.75 and 1,698.40

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Solution

The fourth proportional to 3,891.34, 5,833.75 and 1,698.40 is: 2,546.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891.34 : 5,833.75 = 1,698.40 : x
  2. Step 2: Convert to fraction form
    3,891.34/5,833.75 = 1,698.40/x
  3. Step 3: Cross multiply
    3,891.34x = 5,833.75 × 1,698.40
  4. Step 4: Simplify right side
    3,891.34x = 9,908,041
  5. Step 5: Solve for x
    x = 9,908,041/3,891.34
  6. Step 6: Final answer
    x = 2,546.18

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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.