Home / 8,320.25-11,480.64-4,782.80

Finding the Fourth Proportional to 8,320.25, 11,480.64 and 4,782.80

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Solution

The fourth proportional to 8,320.25, 11,480.64 and 4,782.80 is: 6,599.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320.25 : 11,480.64 = 4,782.80 : x
  2. Step 2: Convert to fraction form
    8,320.25/11,480.64 = 4,782.80/x
  3. Step 3: Cross multiply
    8,320.25x = 11,480.64 × 4,782.80
  4. Step 4: Simplify right side
    8,320.25x = 54,909,604.99
  5. Step 5: Solve for x
    x = 54,909,604.99/8,320.25
  6. Step 6: Final answer
    x = 6,599.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.