Home / 1,904.31-2,856.47-605.79

Finding the Fourth Proportional to 1,904.31, 2,856.47 and 605.79

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Solution

The fourth proportional to 1,904.31, 2,856.47 and 605.79 is: 908.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,904.31 : 2,856.47 = 605.79 : x
  2. Step 2: Convert to fraction form
    1,904.31/2,856.47 = 605.79/x
  3. Step 3: Cross multiply
    1,904.31x = 2,856.47 × 605.79
  4. Step 4: Simplify right side
    1,904.31x = 1,730,420.96
  5. Step 5: Solve for x
    x = 1,730,420.96/1,904.31
  6. Step 6: Final answer
    x = 908.69

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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.