Home / 8,628.42-11,906.80-5,276.85

Finding the Fourth Proportional to 8,628.42, 11,906.80 and 5,276.85

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Solution

The fourth proportional to 8,628.42, 11,906.80 and 5,276.85 is: 7,281.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,628.42 : 11,906.80 = 5,276.85 : x
  2. Step 2: Convert to fraction form
    8,628.42/11,906.80 = 5,276.85/x
  3. Step 3: Cross multiply
    8,628.42x = 11,906.80 × 5,276.85
  4. Step 4: Simplify right side
    8,628.42x = 62,830,339.74
  5. Step 5: Solve for x
    x = 62,830,339.74/8,628.42
  6. Step 6: Final answer
    x = 7,281.79

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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.