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Finding the Fourth Proportional to 8,042, 12,063.90 and 7,215.18

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Solution

The fourth proportional to 8,042, 12,063.90 and 7,215.18 is: 10,823.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,042 : 12,063.90 = 7,215.18 : x
  2. Step 2: Convert to fraction form
    8,042/12,063.90 = 7,215.18/x
  3. Step 3: Cross multiply
    8,042x = 12,063.90 × 7,215.18
  4. Step 4: Simplify right side
    8,042x = 87,043,210.00
  5. Step 5: Solve for x
    x = 87,043,210.00/8,042
  6. Step 6: Final answer
    x = 10,823.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.