Home / 5,638.85-7,778.96-3,751.35

Finding the Fourth Proportional to 5,638.85, 7,778.96 and 3,751.35

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Solution

The fourth proportional to 5,638.85, 7,778.96 and 3,751.35 is: 5,175.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,638.85 : 7,778.96 = 3,751.35 : x
  2. Step 2: Convert to fraction form
    5,638.85/7,778.96 = 3,751.35/x
  3. Step 3: Cross multiply
    5,638.85x = 7,778.96 × 3,751.35
  4. Step 4: Simplify right side
    5,638.85x = 29,181,582.84
  5. Step 5: Solve for x
    x = 29,181,582.84/5,638.85
  6. Step 6: Final answer
    x = 5,175.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.