Home / 2,920.69-4,001.76-2,881.73

Finding the Fourth Proportional to 2,920.69, 4,001.76 and 2,881.73

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Solution

The fourth proportional to 2,920.69, 4,001.76 and 2,881.73 is: 3,948.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.69 : 4,001.76 = 2,881.73 : x
  2. Step 2: Convert to fraction form
    2,920.69/4,001.76 = 2,881.73/x
  3. Step 3: Cross multiply
    2,920.69x = 4,001.76 × 2,881.73
  4. Step 4: Simplify right side
    2,920.69x = 11,532,001.85
  5. Step 5: Solve for x
    x = 11,532,001.85/2,920.69
  6. Step 6: Final answer
    x = 3,948.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.