Home / 1,487.07-2,052.21-823.87

Finding the Fourth Proportional to 1,487.07, 2,052.21 and 823.87

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Solution

The fourth proportional to 1,487.07, 2,052.21 and 823.87 is: 1,136.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487.07 : 2,052.21 = 823.87 : x
  2. Step 2: Convert to fraction form
    1,487.07/2,052.21 = 823.87/x
  3. Step 3: Cross multiply
    1,487.07x = 2,052.21 × 823.87
  4. Step 4: Simplify right side
    1,487.07x = 1,690,759.91
  5. Step 5: Solve for x
    x = 1,690,759.91/1,487.07
  6. Step 6: Final answer
    x = 1,136.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.