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Finding the Fourth Proportional to 8,984.81, 12,378.76 and 7,095.79

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Solution

The fourth proportional to 8,984.81, 12,378.76 and 7,095.79 is: 9,776.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,984.81 : 12,378.76 = 7,095.79 : x
  2. Step 2: Convert to fraction form
    8,984.81/12,378.76 = 7,095.79/x
  3. Step 3: Cross multiply
    8,984.81x = 12,378.76 × 7,095.79
  4. Step 4: Simplify right side
    8,984.81x = 87,837,091.68
  5. Step 5: Solve for x
    x = 87,837,091.68/8,984.81
  6. Step 6: Final answer
    x = 9,776.18

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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.