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Finding the Fourth Proportional to 8,798.40, 13,165.20 and 8,020.80

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Solution

The fourth proportional to 8,798.40, 13,165.20 and 8,020.80 is: 12,001.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,798.40 : 13,165.20 = 8,020.80 : x
  2. Step 2: Convert to fraction form
    8,798.40/13,165.20 = 8,020.80/x
  3. Step 3: Cross multiply
    8,798.40x = 13,165.20 × 8,020.80
  4. Step 4: Simplify right side
    8,798.40x = 105,595,436.16
  5. Step 5: Solve for x
    x = 105,595,436.16/8,798.40
  6. Step 6: Final answer
    x = 12,001.66

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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.