Home / 1,519.21-2,094.10-1,392.09

Finding the Fourth Proportional to 1,519.21, 2,094.10 and 1,392.09

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Solution

The fourth proportional to 1,519.21, 2,094.10 and 1,392.09 is: 1,918.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,519.21 : 2,094.10 = 1,392.09 : x
  2. Step 2: Convert to fraction form
    1,519.21/2,094.10 = 1,392.09/x
  3. Step 3: Cross multiply
    1,519.21x = 2,094.10 × 1,392.09
  4. Step 4: Simplify right side
    1,519.21x = 2,915,172.17
  5. Step 5: Solve for x
    x = 2,915,172.17/1,519.21
  6. Step 6: Final answer
    x = 1,918.88

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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.