Home / 7,181.12-10,762.88-3,428.60

Finding the Fourth Proportional to 7,181.12, 10,762.88 and 3,428.60

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Solution

The fourth proportional to 7,181.12, 10,762.88 and 3,428.60 is: 5,138.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,181.12 : 10,762.88 = 3,428.60 : x
  2. Step 2: Convert to fraction form
    7,181.12/10,762.88 = 3,428.60/x
  3. Step 3: Cross multiply
    7,181.12x = 10,762.88 × 3,428.60
  4. Step 4: Simplify right side
    7,181.12x = 36,901,539.41
  5. Step 5: Solve for x
    x = 36,901,539.41/7,181.12
  6. Step 6: Final answer
    x = 5,138.69

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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.