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Finding the Fourth Proportional to 1,526.84, 2,107.01 and 863.68

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Solution

The fourth proportional to 1,526.84, 2,107.01 and 863.68 is: 1,191.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,526.84 : 2,107.01 = 863.68 : x
  2. Step 2: Convert to fraction form
    1,526.84/2,107.01 = 863.68/x
  3. Step 3: Cross multiply
    1,526.84x = 2,107.01 × 863.68
  4. Step 4: Simplify right side
    1,526.84x = 1,819,782.40
  5. Step 5: Solve for x
    x = 1,819,782.40/1,526.84
  6. Step 6: Final answer
    x = 1,191.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.