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Finding the Fourth Proportional to 1,916.69, 2,873.48 and 992.52

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Solution

The fourth proportional to 1,916.69, 2,873.48 and 992.52 is: 1,487.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916.69 : 2,873.48 = 992.52 : x
  2. Step 2: Convert to fraction form
    1,916.69/2,873.48 = 992.52/x
  3. Step 3: Cross multiply
    1,916.69x = 2,873.48 × 992.52
  4. Step 4: Simplify right side
    1,916.69x = 2,851,981.41
  5. Step 5: Solve for x
    x = 2,851,981.41/1,916.69
  6. Step 6: Final answer
    x = 1,487.97

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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.