Home / 2,403.78-3,317.27-1,355.85

Finding the Fourth Proportional to 2,403.78, 3,317.27 and 1,355.85

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Solution

The fourth proportional to 2,403.78, 3,317.27 and 1,355.85 is: 1,871.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,403.78 : 3,317.27 = 1,355.85 : x
  2. Step 2: Convert to fraction form
    2,403.78/3,317.27 = 1,355.85/x
  3. Step 3: Cross multiply
    2,403.78x = 3,317.27 × 1,355.85
  4. Step 4: Simplify right side
    2,403.78x = 4,497,720.53
  5. Step 5: Solve for x
    x = 4,497,720.53/2,403.78
  6. Step 6: Final answer
    x = 1,871.10

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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.