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Finding the Fourth Proportional to 8,758.70, 12,087.35 and 4,982.21

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Solution

The fourth proportional to 8,758.70, 12,087.35 and 4,982.21 is: 6,875.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,758.70 : 12,087.35 = 4,982.21 : x
  2. Step 2: Convert to fraction form
    8,758.70/12,087.35 = 4,982.21/x
  3. Step 3: Cross multiply
    8,758.70x = 12,087.35 × 4,982.21
  4. Step 4: Simplify right side
    8,758.70x = 60,221,694.71
  5. Step 5: Solve for x
    x = 60,221,694.71/8,758.70
  6. Step 6: Final answer
    x = 6,875.64

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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.