Home / 3,421.47-4,721.62-1,849.56

Finding the Fourth Proportional to 3,421.47, 4,721.62 and 1,849.56

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Solution

The fourth proportional to 3,421.47, 4,721.62 and 1,849.56 is: 2,552.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.47 : 4,721.62 = 1,849.56 : x
  2. Step 2: Convert to fraction form
    3,421.47/4,721.62 = 1,849.56/x
  3. Step 3: Cross multiply
    3,421.47x = 4,721.62 × 1,849.56
  4. Step 4: Simplify right side
    3,421.47x = 8,732,919.49
  5. Step 5: Solve for x
    x = 8,732,919.49/3,421.47
  6. Step 6: Final answer
    x = 2,552.39

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Half scale
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Double scale
Find fourth proportional to 3,422.47, 4,723 and 1,850.56
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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.