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Finding the Fourth Proportional to 5,779.90, 8,670.09 and 4,812.82

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Solution

The fourth proportional to 5,779.90, 8,670.09 and 4,812.82 is: 7,219.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,779.90 : 8,670.09 = 4,812.82 : x
  2. Step 2: Convert to fraction form
    5,779.90/8,670.09 = 4,812.82/x
  3. Step 3: Cross multiply
    5,779.90x = 8,670.09 × 4,812.82
  4. Step 4: Simplify right side
    5,779.90x = 41,727,582.55
  5. Step 5: Solve for x
    x = 41,727,582.55/5,779.90
  6. Step 6: Final answer
    x = 7,219.43

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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.