Home / 2,118.96-3,173.58-1,338.93

Finding the Fourth Proportional to 2,118.96, 3,173.58 and 1,338.93

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Solution

The fourth proportional to 2,118.96, 3,173.58 and 1,338.93 is: 2,005.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118.96 : 3,173.58 = 1,338.93 : x
  2. Step 2: Convert to fraction form
    2,118.96/3,173.58 = 1,338.93/x
  3. Step 3: Cross multiply
    2,118.96x = 3,173.58 × 1,338.93
  4. Step 4: Simplify right side
    2,118.96x = 4,249,201.47
  5. Step 5: Solve for x
    x = 4,249,201.47/2,118.96
  6. Step 6: Final answer
    x = 2,005.32

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1.5x scale

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.