Home / 4,779.86-7,171.39-1,660.65

Finding the Fourth Proportional to 4,779.86, 7,171.39 and 1,660.65

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Solution

The fourth proportional to 4,779.86, 7,171.39 and 1,660.65 is: 2,491.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,779.86 : 7,171.39 = 1,660.65 : x
  2. Step 2: Convert to fraction form
    4,779.86/7,171.39 = 1,660.65/x
  3. Step 3: Cross multiply
    4,779.86x = 7,171.39 × 1,660.65
  4. Step 4: Simplify right side
    4,779.86x = 11,909,174.98
  5. Step 5: Solve for x
    x = 11,909,174.98/4,779.86
  6. Step 6: Final answer
    x = 2,491.53

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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.