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Finding the Fourth Proportional to 1,892.80, 2,840.91 and 968.99

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Solution

The fourth proportional to 1,892.80, 2,840.91 and 968.99 is: 1,454.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,892.80 : 2,840.91 = 968.99 : x
  2. Step 2: Convert to fraction form
    1,892.80/2,840.91 = 968.99/x
  3. Step 3: Cross multiply
    1,892.80x = 2,840.91 × 968.99
  4. Step 4: Simplify right side
    1,892.80x = 2,752,813.38
  5. Step 5: Solve for x
    x = 2,752,813.38/1,892.80
  6. Step 6: Final answer
    x = 1,454.36

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1.5x scale

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.