Home / 8,168.12-11,275.84-4,809.86

Finding the Fourth Proportional to 8,168.12, 11,275.84 and 4,809.86

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Solution

The fourth proportional to 8,168.12, 11,275.84 and 4,809.86 is: 6,639.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,168.12 : 11,275.84 = 4,809.86 : x
  2. Step 2: Convert to fraction form
    8,168.12/11,275.84 = 4,809.86/x
  3. Step 3: Cross multiply
    8,168.12x = 11,275.84 × 4,809.86
  4. Step 4: Simplify right side
    8,168.12x = 54,235,211.78
  5. Step 5: Solve for x
    x = 54,235,211.78/8,168.12
  6. Step 6: Final answer
    x = 6,639.86

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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.