Home / 2,698.11-3,721.55-2,421.09

Finding the Fourth Proportional to 2,698.11, 3,721.55 and 2,421.09

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Solution

The fourth proportional to 2,698.11, 3,721.55 and 2,421.09 is: 3,339.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,698.11 : 3,721.55 = 2,421.09 : x
  2. Step 2: Convert to fraction form
    2,698.11/3,721.55 = 2,421.09/x
  3. Step 3: Cross multiply
    2,698.11x = 3,721.55 × 2,421.09
  4. Step 4: Simplify right side
    2,698.11x = 9,010,195.38
  5. Step 5: Solve for x
    x = 9,010,195.38/2,698.11
  6. Step 6: Final answer
    x = 3,339.45

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Half scale
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Double scale
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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.