Home / 4,120.35-6,178.77-1,587.03

Finding the Fourth Proportional to 4,120.35, 6,178.77 and 1,587.03

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Solution

The fourth proportional to 4,120.35, 6,178.77 and 1,587.03 is: 2,379.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,120.35 : 6,178.77 = 1,587.03 : x
  2. Step 2: Convert to fraction form
    4,120.35/6,178.77 = 1,587.03/x
  3. Step 3: Cross multiply
    4,120.35x = 6,178.77 × 1,587.03
  4. Step 4: Simplify right side
    4,120.35x = 9,805,893.35
  5. Step 5: Solve for x
    x = 9,805,893.35/4,120.35
  6. Step 6: Final answer
    x = 2,379.87

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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.