Home / 1,487.09-2,051.93-823.93

Finding the Fourth Proportional to 1,487.09, 2,051.93 and 823.93

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Solution

The fourth proportional to 1,487.09, 2,051.93 and 823.93 is: 1,136.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487.09 : 2,051.93 = 823.93 : x
  2. Step 2: Convert to fraction form
    1,487.09/2,051.93 = 823.93/x
  3. Step 3: Cross multiply
    1,487.09x = 2,051.93 × 823.93
  4. Step 4: Simplify right side
    1,487.09x = 1,690,646.68
  5. Step 5: Solve for x
    x = 1,690,646.68/1,487.09
  6. Step 6: Final answer
    x = 1,136.88

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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.