Home / 8,128.34-11,217.10-4,591.78

Finding the Fourth Proportional to 8,128.34, 11,217.10 and 4,591.78

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Solution

The fourth proportional to 8,128.34, 11,217.10 and 4,591.78 is: 6,336.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128.34 : 11,217.10 = 4,591.78 : x
  2. Step 2: Convert to fraction form
    8,128.34/11,217.10 = 4,591.78/x
  3. Step 3: Cross multiply
    8,128.34x = 11,217.10 × 4,591.78
  4. Step 4: Simplify right side
    8,128.34x = 51,506,455.44
  5. Step 5: Solve for x
    x = 51,506,455.44/8,128.34
  6. Step 6: Final answer
    x = 6,336.65

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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.