Home / 2,405.86-3,316.51-1,908.62

Finding the Fourth Proportional to 2,405.86, 3,316.51 and 1,908.62

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Solution

The fourth proportional to 2,405.86, 3,316.51 and 1,908.62 is: 2,631.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,405.86 : 3,316.51 = 1,908.62 : x
  2. Step 2: Convert to fraction form
    2,405.86/3,316.51 = 1,908.62/x
  3. Step 3: Cross multiply
    2,405.86x = 3,316.51 × 1,908.62
  4. Step 4: Simplify right side
    2,405.86x = 6,329,955.56
  5. Step 5: Solve for x
    x = 6,329,955.56/2,405.86
  6. Step 6: Final answer
    x = 2,631.06

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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.