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Finding the Fourth Proportional to 8,981.04, 12,387.48 and 7,783.86

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Solution

The fourth proportional to 8,981.04, 12,387.48 and 7,783.86 is: 10,736.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,981.04 : 12,387.48 = 7,783.86 : x
  2. Step 2: Convert to fraction form
    8,981.04/12,387.48 = 7,783.86/x
  3. Step 3: Cross multiply
    8,981.04x = 12,387.48 × 7,783.86
  4. Step 4: Simplify right side
    8,981.04x = 96,422,410.07
  5. Step 5: Solve for x
    x = 96,422,410.07/8,981.04
  6. Step 6: Final answer
    x = 10,736.22

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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.