Home / 1,842.21-2,542.91-1,645.38

Finding the Fourth Proportional to 1,842.21, 2,542.91 and 1,645.38

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Solution

The fourth proportional to 1,842.21, 2,542.91 and 1,645.38 is: 2,271.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,842.21 : 2,542.91 = 1,645.38 : x
  2. Step 2: Convert to fraction form
    1,842.21/2,542.91 = 1,645.38/x
  3. Step 3: Cross multiply
    1,842.21x = 2,542.91 × 1,645.38
  4. Step 4: Simplify right side
    1,842.21x = 4,184,045.03
  5. Step 5: Solve for x
    x = 4,184,045.03/1,842.21
  6. Step 6: Final answer
    x = 2,271.21

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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.