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Finding the Fourth Proportional to 1,328.13, 1,992.20 and 895.59

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Solution

The fourth proportional to 1,328.13, 1,992.20 and 895.59 is: 1,343.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328.13 : 1,992.20 = 895.59 : x
  2. Step 2: Convert to fraction form
    1,328.13/1,992.20 = 895.59/x
  3. Step 3: Cross multiply
    1,328.13x = 1,992.20 × 895.59
  4. Step 4: Simplify right side
    1,328.13x = 1,784,189.92
  5. Step 5: Solve for x
    x = 1,784,189.92/1,328.13
  6. Step 6: Final answer
    x = 1,343.39

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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.