Home / 1,915.94-2,643.51-1,169.63

Finding the Fourth Proportional to 1,915.94, 2,643.51 and 1,169.63

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Solution

The fourth proportional to 1,915.94, 2,643.51 and 1,169.63 is: 1,613.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,915.94 : 2,643.51 = 1,169.63 : x
  2. Step 2: Convert to fraction form
    1,915.94/2,643.51 = 1,169.63/x
  3. Step 3: Cross multiply
    1,915.94x = 2,643.51 × 1,169.63
  4. Step 4: Simplify right side
    1,915.94x = 3,091,929.68
  5. Step 5: Solve for x
    x = 3,091,929.68/1,915.94
  6. Step 6: Final answer
    x = 1,613.79

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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.