Home / 6,315.81-8,716.07-3,521.25

Finding the Fourth Proportional to 6,315.81, 8,716.07 and 3,521.25

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Solution

The fourth proportional to 6,315.81, 8,716.07 and 3,521.25 is: 4,859.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,315.81 : 8,716.07 = 3,521.25 : x
  2. Step 2: Convert to fraction form
    6,315.81/8,716.07 = 3,521.25/x
  3. Step 3: Cross multiply
    6,315.81x = 8,716.07 × 3,521.25
  4. Step 4: Simplify right side
    6,315.81x = 30,691,443.88
  5. Step 5: Solve for x
    x = 30,691,443.88/6,315.81
  6. Step 6: Final answer
    x = 4,859.46

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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.