Home / 8,688.08-11,986.64-4,910.78

Finding the Fourth Proportional to 8,688.08, 11,986.64 and 4,910.78

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Solution

The fourth proportional to 8,688.08, 11,986.64 and 4,910.78 is: 6,775.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,688.08 : 11,986.64 = 4,910.78 : x
  2. Step 2: Convert to fraction form
    8,688.08/11,986.64 = 4,910.78/x
  3. Step 3: Cross multiply
    8,688.08x = 11,986.64 × 4,910.78
  4. Step 4: Simplify right side
    8,688.08x = 58,863,751.98
  5. Step 5: Solve for x
    x = 58,863,751.98/8,688.08
  6. Step 6: Final answer
    x = 6,775.23

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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.