Home / 2,400.65-3,313.64-1,405.56

Finding the Fourth Proportional to 2,400.65, 3,313.64 and 1,405.56

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Solution

The fourth proportional to 2,400.65, 3,313.64 and 1,405.56 is: 1,940.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,400.65 : 3,313.64 = 1,405.56 : x
  2. Step 2: Convert to fraction form
    2,400.65/3,313.64 = 1,405.56/x
  3. Step 3: Cross multiply
    2,400.65x = 3,313.64 × 1,405.56
  4. Step 4: Simplify right side
    2,400.65x = 4,657,535.78
  5. Step 5: Solve for x
    x = 4,657,535.78/2,400.65
  6. Step 6: Final answer
    x = 1,940.12

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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.