Home / 3,911.07-5,396.79-3,116.42

Finding the Fourth Proportional to 3,911.07, 5,396.79 and 3,116.42

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Solution

The fourth proportional to 3,911.07, 5,396.79 and 3,116.42 is: 4,300.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,911.07 : 5,396.79 = 3,116.42 : x
  2. Step 2: Convert to fraction form
    3,911.07/5,396.79 = 3,116.42/x
  3. Step 3: Cross multiply
    3,911.07x = 5,396.79 × 3,116.42
  4. Step 4: Simplify right side
    3,911.07x = 16,818,637.31
  5. Step 5: Solve for x
    x = 16,818,637.31/3,911.07
  6. Step 6: Final answer
    x = 4,300.26

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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.