Home / 3,521.85-4,860-1,928.46

Finding the Fourth Proportional to 3,521.85, 4,860 and 1,928.46

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Solution

The fourth proportional to 3,521.85, 4,860 and 1,928.46 is: 2,661.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,521.85 : 4,860 = 1,928.46 : x
  2. Step 2: Convert to fraction form
    3,521.85/4,860 = 1,928.46/x
  3. Step 3: Cross multiply
    3,521.85x = 4,860 × 1,928.46
  4. Step 4: Simplify right side
    3,521.85x = 9,372,315.60
  5. Step 5: Solve for x
    x = 9,372,315.60/3,521.85
  6. Step 6: Final answer
    x = 2,661.19

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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.