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Finding the Fourth Proportional to 1,526.99, 2,107.11 and 863.70

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Solution

The fourth proportional to 1,526.99, 2,107.11 and 863.70 is: 1,191.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,526.99 : 2,107.11 = 863.70 : x
  2. Step 2: Convert to fraction form
    1,526.99/2,107.11 = 863.70/x
  3. Step 3: Cross multiply
    1,526.99x = 2,107.11 × 863.70
  4. Step 4: Simplify right side
    1,526.99x = 1,819,910.91
  5. Step 5: Solve for x
    x = 1,819,910.91/1,526.99
  6. Step 6: Final answer
    x = 1,191.83

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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.