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Finding the Fourth Proportional to 5,851.90, 8,779.29 and 4,123.90

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Solution

The fourth proportional to 5,851.90, 8,779.29 and 4,123.90 is: 6,186.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,851.90 : 8,779.29 = 4,123.90 : x
  2. Step 2: Convert to fraction form
    5,851.90/8,779.29 = 4,123.90/x
  3. Step 3: Cross multiply
    5,851.90x = 8,779.29 × 4,123.90
  4. Step 4: Simplify right side
    5,851.90x = 36,204,914.03
  5. Step 5: Solve for x
    x = 36,204,914.03/5,851.90
  6. Step 6: Final answer
    x = 6,186.86

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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.