Home / 1,487.09-2,052.47-857.59

Finding the Fourth Proportional to 1,487.09, 2,052.47 and 857.59

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Solution

The fourth proportional to 1,487.09, 2,052.47 and 857.59 is: 1,183.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487.09 : 2,052.47 = 857.59 : x
  2. Step 2: Convert to fraction form
    1,487.09/2,052.47 = 857.59/x
  3. Step 3: Cross multiply
    1,487.09x = 2,052.47 × 857.59
  4. Step 4: Simplify right side
    1,487.09x = 1,760,179.24
  5. Step 5: Solve for x
    x = 1,760,179.24/1,487.09
  6. Step 6: Final answer
    x = 1,183.64

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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.