Home / 2,915.66-4,022.92-1,720.69

Finding the Fourth Proportional to 2,915.66, 4,022.92 and 1,720.69

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Solution

The fourth proportional to 2,915.66, 4,022.92 and 1,720.69 is: 2,374.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,915.66 : 4,022.92 = 1,720.69 : x
  2. Step 2: Convert to fraction form
    2,915.66/4,022.92 = 1,720.69/x
  3. Step 3: Cross multiply
    2,915.66x = 4,022.92 × 1,720.69
  4. Step 4: Simplify right side
    2,915.66x = 6,922,203.26
  5. Step 5: Solve for x
    x = 6,922,203.26/2,915.66
  6. Step 6: Final answer
    x = 2,374.14

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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.