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Finding the Fourth Proportional to 8,854.80, 12,215.14 and 5,499.60

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Solution

The fourth proportional to 8,854.80, 12,215.14 and 5,499.60 is: 7,586.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,854.80 : 12,215.14 = 5,499.60 : x
  2. Step 2: Convert to fraction form
    8,854.80/12,215.14 = 5,499.60/x
  3. Step 3: Cross multiply
    8,854.80x = 12,215.14 × 5,499.60
  4. Step 4: Simplify right side
    8,854.80x = 67,178,383.94
  5. Step 5: Solve for x
    x = 67,178,383.94/8,854.80
  6. Step 6: Final answer
    x = 7,586.66

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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.