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Finding the Fourth Proportional to 8,818.95, 12,170.79 and 5,829.60

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Solution

The fourth proportional to 8,818.95, 12,170.79 and 5,829.60 is: 8,045.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,818.95 : 12,170.79 = 5,829.60 : x
  2. Step 2: Convert to fraction form
    8,818.95/12,170.79 = 5,829.60/x
  3. Step 3: Cross multiply
    8,818.95x = 12,170.79 × 5,829.60
  4. Step 4: Simplify right side
    8,818.95x = 70,950,837.38
  5. Step 5: Solve for x
    x = 70,950,837.38/8,818.95
  6. Step 6: Final answer
    x = 8,045.27

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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.