Home / 1,638.50-2,456.15-1,051.85

Finding the Fourth Proportional to 1,638.50, 2,456.15 and 1,051.85

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Solution

The fourth proportional to 1,638.50, 2,456.15 and 1,051.85 is: 1,576.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638.50 : 2,456.15 = 1,051.85 : x
  2. Step 2: Convert to fraction form
    1,638.50/2,456.15 = 1,051.85/x
  3. Step 3: Cross multiply
    1,638.50x = 2,456.15 × 1,051.85
  4. Step 4: Simplify right side
    1,638.50x = 2,583,502.26
  5. Step 5: Solve for x
    x = 2,583,502.26/1,638.50
  6. Step 6: Final answer
    x = 1,576.75

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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.