Home / 1,915.11-2,644.52-1,208.22

Finding the Fourth Proportional to 1,915.11, 2,644.52 and 1,208.22

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Solution

The fourth proportional to 1,915.11, 2,644.52 and 1,208.22 is: 1,668.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,915.11 : 2,644.52 = 1,208.22 : x
  2. Step 2: Convert to fraction form
    1,915.11/2,644.52 = 1,208.22/x
  3. Step 3: Cross multiply
    1,915.11x = 2,644.52 × 1,208.22
  4. Step 4: Simplify right side
    1,915.11x = 3,195,161.95
  5. Step 5: Solve for x
    x = 3,195,161.95/1,915.11
  6. Step 6: Final answer
    x = 1,668.40

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1.5x scale

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.