Home / 1,423.14-2,136.71-730.31

Finding the Fourth Proportional to 1,423.14, 2,136.71 and 730.31

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Solution

The fourth proportional to 1,423.14, 2,136.71 and 730.31 is: 1,096.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,423.14 : 2,136.71 = 730.31 : x
  2. Step 2: Convert to fraction form
    1,423.14/2,136.71 = 730.31/x
  3. Step 3: Cross multiply
    1,423.14x = 2,136.71 × 730.31
  4. Step 4: Simplify right side
    1,423.14x = 1,560,460.68
  5. Step 5: Solve for x
    x = 1,560,460.68/1,423.14
  6. Step 6: Final answer
    x = 1,096.49

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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.