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Finding the Fourth Proportional to 1,623.08, 2,432.94 and 842.12

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Solution

The fourth proportional to 1,623.08, 2,432.94 and 842.12 is: 1,262.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,623.08 : 2,432.94 = 842.12 : x
  2. Step 2: Convert to fraction form
    1,623.08/2,432.94 = 842.12/x
  3. Step 3: Cross multiply
    1,623.08x = 2,432.94 × 842.12
  4. Step 4: Simplify right side
    1,623.08x = 2,048,827.43
  5. Step 5: Solve for x
    x = 2,048,827.43/1,623.08
  6. Step 6: Final answer
    x = 1,262.31

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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.