Home / 5,185.74-7,778.59-4,140.84

Finding the Fourth Proportional to 5,185.74, 7,778.59 and 4,140.84

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Solution

The fourth proportional to 5,185.74, 7,778.59 and 4,140.84 is: 6,211.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,185.74 : 7,778.59 = 4,140.84 : x
  2. Step 2: Convert to fraction form
    5,185.74/7,778.59 = 4,140.84/x
  3. Step 3: Cross multiply
    5,185.74x = 7,778.59 × 4,140.84
  4. Step 4: Simplify right side
    5,185.74x = 32,209,930.96
  5. Step 5: Solve for x
    x = 32,209,930.96/5,185.74
  6. Step 6: Final answer
    x = 6,211.26

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1.5x scale

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.