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Finding the Fourth Proportional to 8,854.56, 12,130.80 and 8,522.40

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Solution

The fourth proportional to 8,854.56, 12,130.80 and 8,522.40 is: 11,675.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,854.56 : 12,130.80 = 8,522.40 : x
  2. Step 2: Convert to fraction form
    8,854.56/12,130.80 = 8,522.40/x
  3. Step 3: Cross multiply
    8,854.56x = 12,130.80 × 8,522.40
  4. Step 4: Simplify right side
    8,854.56x = 103,383,529.92
  5. Step 5: Solve for x
    x = 103,383,529.92/8,854.56
  6. Step 6: Final answer
    x = 11,675.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.