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Finding the Fourth Proportional to 5,779.13, 7,975.43 and 3,388.77

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Solution

The fourth proportional to 5,779.13, 7,975.43 and 3,388.77 is: 4,676.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,779.13 : 7,975.43 = 3,388.77 : x
  2. Step 2: Convert to fraction form
    5,779.13/7,975.43 = 3,388.77/x
  3. Step 3: Cross multiply
    5,779.13x = 7,975.43 × 3,388.77
  4. Step 4: Simplify right side
    5,779.13x = 27,026,933.12
  5. Step 5: Solve for x
    x = 27,026,933.12/5,779.13
  6. Step 6: Final answer
    x = 4,676.64

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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.