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Finding the Fourth Proportional to 1,881.28, 2,823.75 and 908.07

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Solution

The fourth proportional to 1,881.28, 2,823.75 and 908.07 is: 1,362.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,881.28 : 2,823.75 = 908.07 : x
  2. Step 2: Convert to fraction form
    1,881.28/2,823.75 = 908.07/x
  3. Step 3: Cross multiply
    1,881.28x = 2,823.75 × 908.07
  4. Step 4: Simplify right side
    1,881.28x = 2,564,144.00
  5. Step 5: Solve for x
    x = 2,564,144.00/1,881.28
  6. Step 6: Final answer
    x = 1,362.98

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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.