Home / 2,090.05-2,883.81-1,205.80

Finding the Fourth Proportional to 2,090.05, 2,883.81 and 1,205.80

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Solution

The fourth proportional to 2,090.05, 2,883.81 and 1,205.80 is: 1,663.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,090.05 : 2,883.81 = 1,205.80 : x
  2. Step 2: Convert to fraction form
    2,090.05/2,883.81 = 1,205.80/x
  3. Step 3: Cross multiply
    2,090.05x = 2,883.81 × 1,205.80
  4. Step 4: Simplify right side
    2,090.05x = 3,477,298.10
  5. Step 5: Solve for x
    x = 3,477,298.10/2,090.05
  6. Step 6: Final answer
    x = 1,663.74

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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.