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Finding the Fourth Proportional to 1,623.92, 2,435.90 and 757.64

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Solution

The fourth proportional to 1,623.92, 2,435.90 and 757.64 is: 1,136.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,623.92 : 2,435.90 = 757.64 : x
  2. Step 2: Convert to fraction form
    1,623.92/2,435.90 = 757.64/x
  3. Step 3: Cross multiply
    1,623.92x = 2,435.90 × 757.64
  4. Step 4: Simplify right side
    1,623.92x = 1,845,535.28
  5. Step 5: Solve for x
    x = 1,845,535.28/1,623.92
  6. Step 6: Final answer
    x = 1,136.47

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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.