Home / 3,779.60-5,666.70-1,697.90

Finding the Fourth Proportional to 3,779.60, 5,666.70 and 1,697.90

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Solution

The fourth proportional to 3,779.60, 5,666.70 and 1,697.90 is: 2,545.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,779.60 : 5,666.70 = 1,697.90 : x
  2. Step 2: Convert to fraction form
    3,779.60/5,666.70 = 1,697.90/x
  3. Step 3: Cross multiply
    3,779.60x = 5,666.70 × 1,697.90
  4. Step 4: Simplify right side
    3,779.60x = 9,621,489.93
  5. Step 5: Solve for x
    x = 9,621,489.93/3,779.60
  6. Step 6: Final answer
    x = 2,545.64

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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.