Home / 2,090.70-2,885.09-1,206.64

Finding the Fourth Proportional to 2,090.70, 2,885.09 and 1,206.64

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Solution

The fourth proportional to 2,090.70, 2,885.09 and 1,206.64 is: 1,665.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,090.70 : 2,885.09 = 1,206.64 : x
  2. Step 2: Convert to fraction form
    2,090.70/2,885.09 = 1,206.64/x
  3. Step 3: Cross multiply
    2,090.70x = 2,885.09 × 1,206.64
  4. Step 4: Simplify right side
    2,090.70x = 3,481,260.80
  5. Step 5: Solve for x
    x = 3,481,260.80/2,090.70
  6. Step 6: Final answer
    x = 1,665.12

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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.