Home / 6,918.78-10,380.60-4,318.68

Finding the Fourth Proportional to 6,918.78, 10,380.60 and 4,318.68

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Solution

The fourth proportional to 6,918.78, 10,380.60 and 4,318.68 is: 6,479.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,918.78 : 10,380.60 = 4,318.68 : x
  2. Step 2: Convert to fraction form
    6,918.78/10,380.60 = 4,318.68/x
  3. Step 3: Cross multiply
    6,918.78x = 10,380.60 × 4,318.68
  4. Step 4: Simplify right side
    6,918.78x = 44,830,489.61
  5. Step 5: Solve for x
    x = 44,830,489.61/6,918.78
  6. Step 6: Final answer
    x = 6,479.54

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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.