Home / 7,779.12-11,666.68-2,849.20

Finding the Fourth Proportional to 7,779.12, 11,666.68 and 2,849.20

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Solution

The fourth proportional to 7,779.12, 11,666.68 and 2,849.20 is: 4,273.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,779.12 : 11,666.68 = 2,849.20 : x
  2. Step 2: Convert to fraction form
    7,779.12/11,666.68 = 2,849.20/x
  3. Step 3: Cross multiply
    7,779.12x = 11,666.68 × 2,849.20
  4. Step 4: Simplify right side
    7,779.12x = 33,240,704.66
  5. Step 5: Solve for x
    x = 33,240,704.66/7,779.12
  6. Step 6: Final answer
    x = 4,273.07

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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.