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Finding the Fourth Proportional to 8,830.11, 13,221.45 and 4,661.45

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Solution

The fourth proportional to 8,830.11, 13,221.45 and 4,661.45 is: 6,979.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,830.11 : 13,221.45 = 4,661.45 : x
  2. Step 2: Convert to fraction form
    8,830.11/13,221.45 = 4,661.45/x
  3. Step 3: Cross multiply
    8,830.11x = 13,221.45 × 4,661.45
  4. Step 4: Simplify right side
    8,830.11x = 61,631,062.00
  5. Step 5: Solve for x
    x = 61,631,062.00/8,830.11
  6. Step 6: Final answer
    x = 6,979.65

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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.