Home / 3,117.69-4,678.97-2,021.76

Finding the Fourth Proportional to 3,117.69, 4,678.97 and 2,021.76

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Solution

The fourth proportional to 3,117.69, 4,678.97 and 2,021.76 is: 3,034.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.69 : 4,678.97 = 2,021.76 : x
  2. Step 2: Convert to fraction form
    3,117.69/4,678.97 = 2,021.76/x
  3. Step 3: Cross multiply
    3,117.69x = 4,678.97 × 2,021.76
  4. Step 4: Simplify right side
    3,117.69x = 9,459,744.28
  5. Step 5: Solve for x
    x = 9,459,744.28/3,117.69
  6. Step 6: Final answer
    x = 3,034.22

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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.