Home / 2,985.74-4,119.68-2,028.98

Finding the Fourth Proportional to 2,985.74, 4,119.68 and 2,028.98

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Solution

The fourth proportional to 2,985.74, 4,119.68 and 2,028.98 is: 2,799.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.74 : 4,119.68 = 2,028.98 : x
  2. Step 2: Convert to fraction form
    2,985.74/4,119.68 = 2,028.98/x
  3. Step 3: Cross multiply
    2,985.74x = 4,119.68 × 2,028.98
  4. Step 4: Simplify right side
    2,985.74x = 8,358,717.58
  5. Step 5: Solve for x
    x = 8,358,717.58/2,985.74
  6. Step 6: Final answer
    x = 2,799.55

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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.