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Finding the Fourth Proportional to 8,779.80, 13,193.10 and 4,834.20

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Solution

The fourth proportional to 8,779.80, 13,193.10 and 4,834.20 is: 7,264.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,779.80 : 13,193.10 = 4,834.20 : x
  2. Step 2: Convert to fraction form
    8,779.80/13,193.10 = 4,834.20/x
  3. Step 3: Cross multiply
    8,779.80x = 13,193.10 × 4,834.20
  4. Step 4: Simplify right side
    8,779.80x = 63,778,084.02
  5. Step 5: Solve for x
    x = 63,778,084.02/8,779.80
  6. Step 6: Final answer
    x = 7,264.18

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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.