Home / 8,646.85-11,932.88-5,289.60

Finding the Fourth Proportional to 8,646.85, 11,932.88 and 5,289.60

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Solution

The fourth proportional to 8,646.85, 11,932.88 and 5,289.60 is: 7,299.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,646.85 : 11,932.88 = 5,289.60 : x
  2. Step 2: Convert to fraction form
    8,646.85/11,932.88 = 5,289.60/x
  3. Step 3: Cross multiply
    8,646.85x = 11,932.88 × 5,289.60
  4. Step 4: Simplify right side
    8,646.85x = 63,120,162.05
  5. Step 5: Solve for x
    x = 63,120,162.05/8,646.85
  6. Step 6: Final answer
    x = 7,299.79

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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.