Home / 3,898.21-5,378.00-2,403.53

Finding the Fourth Proportional to 3,898.21, 5,378.00 and 2,403.53

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Solution

The fourth proportional to 3,898.21, 5,378.00 and 2,403.53 is: 3,315.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,898.21 : 5,378.00 = 2,403.53 : x
  2. Step 2: Convert to fraction form
    3,898.21/5,378.00 = 2,403.53/x
  3. Step 3: Cross multiply
    3,898.21x = 5,378.00 × 2,403.53
  4. Step 4: Simplify right side
    3,898.21x = 12,926,189.20
  5. Step 5: Solve for x
    x = 12,926,189.20/3,898.21
  6. Step 6: Final answer
    x = 3,315.93

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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.