Home / 6,239.64-9,351.60-5,457.78

Finding the Fourth Proportional to 6,239.64, 9,351.60 and 5,457.78

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Solution

The fourth proportional to 6,239.64, 9,351.60 and 5,457.78 is: 8,179.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,239.64 : 9,351.60 = 5,457.78 : x
  2. Step 2: Convert to fraction form
    6,239.64/9,351.60 = 5,457.78/x
  3. Step 3: Cross multiply
    6,239.64x = 9,351.60 × 5,457.78
  4. Step 4: Simplify right side
    6,239.64x = 51,038,975.45
  5. Step 5: Solve for x
    x = 51,038,975.45/6,239.64
  6. Step 6: Final answer
    x = 8,179.79

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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.