Home / 8,128.60-11,217.52-4,984.18

Finding the Fourth Proportional to 8,128.60, 11,217.52 and 4,984.18

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Solution

The fourth proportional to 8,128.60, 11,217.52 and 4,984.18 is: 6,878.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128.60 : 11,217.52 = 4,984.18 : x
  2. Step 2: Convert to fraction form
    8,128.60/11,217.52 = 4,984.18/x
  3. Step 3: Cross multiply
    8,128.60x = 11,217.52 × 4,984.18
  4. Step 4: Simplify right side
    8,128.60x = 55,910,138.83
  5. Step 5: Solve for x
    x = 55,910,138.83/8,128.60
  6. Step 6: Final answer
    x = 6,878.20

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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.