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Finding the Fourth Proportional to 8,786.96, 12,124.32 and 5,248.88

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Solution

The fourth proportional to 8,786.96, 12,124.32 and 5,248.88 is: 7,242.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,786.96 : 12,124.32 = 5,248.88 : x
  2. Step 2: Convert to fraction form
    8,786.96/12,124.32 = 5,248.88/x
  3. Step 3: Cross multiply
    8,786.96x = 12,124.32 × 5,248.88
  4. Step 4: Simplify right side
    8,786.96x = 63,639,100.76
  5. Step 5: Solve for x
    x = 63,639,100.76/8,786.96
  6. Step 6: Final answer
    x = 7,242.45

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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.