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Finding the Fourth Proportional to 1,816.65, 2,725.47 and 829.71

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Solution

The fourth proportional to 1,816.65, 2,725.47 and 829.71 is: 1,244.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,816.65 : 2,725.47 = 829.71 : x
  2. Step 2: Convert to fraction form
    1,816.65/2,725.47 = 829.71/x
  3. Step 3: Cross multiply
    1,816.65x = 2,725.47 × 829.71
  4. Step 4: Simplify right side
    1,816.65x = 2,261,349.71
  5. Step 5: Solve for x
    x = 2,261,349.71/1,816.65
  6. Step 6: Final answer
    x = 1,244.79

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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.