Home / 1,784.43-2,676.56-485.87

Finding the Fourth Proportional to 1,784.43, 2,676.56 and 485.87

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Solution

The fourth proportional to 1,784.43, 2,676.56 and 485.87 is: 728.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,784.43 : 2,676.56 = 485.87 : x
  2. Step 2: Convert to fraction form
    1,784.43/2,676.56 = 485.87/x
  3. Step 3: Cross multiply
    1,784.43x = 2,676.56 × 485.87
  4. Step 4: Simplify right side
    1,784.43x = 1,300,444.40
  5. Step 5: Solve for x
    x = 1,300,444.40/1,784.43
  6. Step 6: Final answer
    x = 728.77

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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.