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Finding the Fourth Proportional to 8,487.03, 11,717.39 and 7,957.48

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Solution

The fourth proportional to 8,487.03, 11,717.39 and 7,957.48 is: 10,986.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,487.03 : 11,717.39 = 7,957.48 : x
  2. Step 2: Convert to fraction form
    8,487.03/11,717.39 = 7,957.48/x
  3. Step 3: Cross multiply
    8,487.03x = 11,717.39 × 7,957.48
  4. Step 4: Simplify right side
    8,487.03x = 93,240,856.79
  5. Step 5: Solve for x
    x = 93,240,856.79/8,487.03
  6. Step 6: Final answer
    x = 10,986.28

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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.