Home / 2,400.53-3,312.31-1,405.79

Finding the Fourth Proportional to 2,400.53, 3,312.31 and 1,405.79

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Solution

The fourth proportional to 2,400.53, 3,312.31 and 1,405.79 is: 1,939.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,400.53 : 3,312.31 = 1,405.79 : x
  2. Step 2: Convert to fraction form
    2,400.53/3,312.31 = 1,405.79/x
  3. Step 3: Cross multiply
    2,400.53x = 3,312.31 × 1,405.79
  4. Step 4: Simplify right side
    2,400.53x = 4,656,388.68
  5. Step 5: Solve for x
    x = 4,656,388.68/2,400.53
  6. Step 6: Final answer
    x = 1,939.73

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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.