Home / 1,784.41-2,676.75-485.89

Finding the Fourth Proportional to 1,784.41, 2,676.75 and 485.89

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Solution

The fourth proportional to 1,784.41, 2,676.75 and 485.89 is: 728.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,784.41 : 2,676.75 = 485.89 : x
  2. Step 2: Convert to fraction form
    1,784.41/2,676.75 = 485.89/x
  3. Step 3: Cross multiply
    1,784.41x = 2,676.75 × 485.89
  4. Step 4: Simplify right side
    1,784.41x = 1,300,606.06
  5. Step 5: Solve for x
    x = 1,300,606.06/1,784.41
  6. Step 6: Final answer
    x = 728.87

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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.