Home / 1,454.87-2,180.18-905.39

Finding the Fourth Proportional to 1,454.87, 2,180.18 and 905.39

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Solution

The fourth proportional to 1,454.87, 2,180.18 and 905.39 is: 1,356.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,454.87 : 2,180.18 = 905.39 : x
  2. Step 2: Convert to fraction form
    1,454.87/2,180.18 = 905.39/x
  3. Step 3: Cross multiply
    1,454.87x = 2,180.18 × 905.39
  4. Step 4: Simplify right side
    1,454.87x = 1,973,904.53
  5. Step 5: Solve for x
    x = 1,973,904.53/1,454.87
  6. Step 6: Final answer
    x = 1,356.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.