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Finding the Fourth Proportional to 1,527.08, 2,107.28 and 863.89

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Solution

The fourth proportional to 1,527.08, 2,107.28 and 863.89 is: 1,192.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,527.08 : 2,107.28 = 863.89 : x
  2. Step 2: Convert to fraction form
    1,527.08/2,107.28 = 863.89/x
  3. Step 3: Cross multiply
    1,527.08x = 2,107.28 × 863.89
  4. Step 4: Simplify right side
    1,527.08x = 1,820,458.12
  5. Step 5: Solve for x
    x = 1,820,458.12/1,527.08
  6. Step 6: Final answer
    x = 1,192.12

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1.5x scale

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.