Home / 1,942.88-2,915.02-1,213.07

Finding the Fourth Proportional to 1,942.88, 2,915.02 and 1,213.07

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Solution

The fourth proportional to 1,942.88, 2,915.02 and 1,213.07 is: 1,820.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942.88 : 2,915.02 = 1,213.07 : x
  2. Step 2: Convert to fraction form
    1,942.88/2,915.02 = 1,213.07/x
  3. Step 3: Cross multiply
    1,942.88x = 2,915.02 × 1,213.07
  4. Step 4: Simplify right side
    1,942.88x = 3,536,108.74
  5. Step 5: Solve for x
    x = 3,536,108.74/1,942.88
  6. Step 6: Final answer
    x = 1,820.04

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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.