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Finding the Fourth Proportional to 2,920.51, 4,007.16 and 2,892.97

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Solution

The fourth proportional to 2,920.51, 4,007.16 and 2,892.97 is: 3,969.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.51 : 4,007.16 = 2,892.97 : x
  2. Step 2: Convert to fraction form
    2,920.51/4,007.16 = 2,892.97/x
  3. Step 3: Cross multiply
    2,920.51x = 4,007.16 × 2,892.97
  4. Step 4: Simplify right side
    2,920.51x = 11,592,593.67
  5. Step 5: Solve for x
    x = 11,592,593.67/2,920.51
  6. Step 6: Final answer
    x = 3,969.37

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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.