Home / 6,378.90-9,558.63-3,258.78

Finding the Fourth Proportional to 6,378.90, 9,558.63 and 3,258.78

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Solution

The fourth proportional to 6,378.90, 9,558.63 and 3,258.78 is: 4,883.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,378.90 : 9,558.63 = 3,258.78 : x
  2. Step 2: Convert to fraction form
    6,378.90/9,558.63 = 3,258.78/x
  3. Step 3: Cross multiply
    6,378.90x = 9,558.63 × 3,258.78
  4. Step 4: Simplify right side
    6,378.90x = 31,149,472.27
  5. Step 5: Solve for x
    x = 31,149,472.27/6,378.90
  6. Step 6: Final answer
    x = 4,883.20

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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.