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Finding the Fourth Proportional to 8,763.84, 13,138.80 and 4,379.04

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Solution

The fourth proportional to 8,763.84, 13,138.80 and 4,379.04 is: 6,565.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,763.84 : 13,138.80 = 4,379.04 : x
  2. Step 2: Convert to fraction form
    8,763.84/13,138.80 = 4,379.04/x
  3. Step 3: Cross multiply
    8,763.84x = 13,138.80 × 4,379.04
  4. Step 4: Simplify right side
    8,763.84x = 57,535,330.75
  5. Step 5: Solve for x
    x = 57,535,330.75/8,763.84
  6. Step 6: Final answer
    x = 6,565.08

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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.