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Finding the Fourth Proportional to 1,425.62, 2,136.83 and 730.23

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Solution

The fourth proportional to 1,425.62, 2,136.83 and 730.23 is: 1,094.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425.62 : 2,136.83 = 730.23 : x
  2. Step 2: Convert to fraction form
    1,425.62/2,136.83 = 730.23/x
  3. Step 3: Cross multiply
    1,425.62x = 2,136.83 × 730.23
  4. Step 4: Simplify right side
    1,425.62x = 1,560,373.72
  5. Step 5: Solve for x
    x = 1,560,373.72/1,425.62
  6. Step 6: Final answer
    x = 1,094.53

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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.