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Finding the Fourth Proportional to 8,551.55, 12,798.15 and 7,166.45

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Solution

The fourth proportional to 8,551.55, 12,798.15 and 7,166.45 is: 10,725.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,551.55 : 12,798.15 = 7,166.45 : x
  2. Step 2: Convert to fraction form
    8,551.55/12,798.15 = 7,166.45/x
  3. Step 3: Cross multiply
    8,551.55x = 12,798.15 × 7,166.45
  4. Step 4: Simplify right side
    8,551.55x = 91,717,302.07
  5. Step 5: Solve for x
    x = 91,717,302.07/8,551.55
  6. Step 6: Final answer
    x = 10,725.23

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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.