Home / 1,784.30-2,676.11-485.46

Finding the Fourth Proportional to 1,784.30, 2,676.11 and 485.46

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Solution

The fourth proportional to 1,784.30, 2,676.11 and 485.46 is: 728.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,784.30 : 2,676.11 = 485.46 : x
  2. Step 2: Convert to fraction form
    1,784.30/2,676.11 = 485.46/x
  3. Step 3: Cross multiply
    1,784.30x = 2,676.11 × 485.46
  4. Step 4: Simplify right side
    1,784.30x = 1,299,141.93
  5. Step 5: Solve for x
    x = 1,299,141.93/1,784.30
  6. Step 6: Final answer
    x = 728.10

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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.