Home / 5,636.85-7,778.15-3,118.61

Finding the Fourth Proportional to 5,636.85, 7,778.15 and 3,118.61

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Solution

The fourth proportional to 5,636.85, 7,778.15 and 3,118.61 is: 4,303.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,636.85 : 7,778.15 = 3,118.61 : x
  2. Step 2: Convert to fraction form
    5,636.85/7,778.15 = 3,118.61/x
  3. Step 3: Cross multiply
    5,636.85x = 7,778.15 × 3,118.61
  4. Step 4: Simplify right side
    5,636.85x = 24,256,961.89
  5. Step 5: Solve for x
    x = 24,256,961.89/5,636.85
  6. Step 6: Final answer
    x = 4,303.28

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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.