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Finding the Fourth Proportional to 6,363.90, 8,779.05 and 5,523.48

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Solution

The fourth proportional to 6,363.90, 8,779.05 and 5,523.48 is: 7,619.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,363.90 : 8,779.05 = 5,523.48 : x
  2. Step 2: Convert to fraction form
    6,363.90/8,779.05 = 5,523.48/x
  3. Step 3: Cross multiply
    6,363.90x = 8,779.05 × 5,523.48
  4. Step 4: Simplify right side
    6,363.90x = 48,490,907.09
  5. Step 5: Solve for x
    x = 48,490,907.09/6,363.90
  6. Step 6: Final answer
    x = 7,619.68

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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.