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Finding the Fourth Proportional to 8,341.79, 12,516.93 and 5,221.26

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Solution

The fourth proportional to 8,341.79, 12,516.93 and 5,221.26 is: 7,834.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,341.79 : 12,516.93 = 5,221.26 : x
  2. Step 2: Convert to fraction form
    8,341.79/12,516.93 = 5,221.26/x
  3. Step 3: Cross multiply
    8,341.79x = 12,516.93 × 5,221.26
  4. Step 4: Simplify right side
    8,341.79x = 65,354,145.93
  5. Step 5: Solve for x
    x = 65,354,145.93/8,341.79
  6. Step 6: Final answer
    x = 7,834.55

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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.