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Finding the Fourth Proportional to 1,945.02, 2,916.49 and 646.02

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Solution

The fourth proportional to 1,945.02, 2,916.49 and 646.02 is: 968.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945.02 : 2,916.49 = 646.02 : x
  2. Step 2: Convert to fraction form
    1,945.02/2,916.49 = 646.02/x
  3. Step 3: Cross multiply
    1,945.02x = 2,916.49 × 646.02
  4. Step 4: Simplify right side
    1,945.02x = 1,884,110.87
  5. Step 5: Solve for x
    x = 1,884,110.87/1,945.02
  6. Step 6: Final answer
    x = 968.68

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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.