Home / 7,779.85-11,668.05-2,515.32

Finding the Fourth Proportional to 7,779.85, 11,668.05 and 2,515.32

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Solution

The fourth proportional to 7,779.85, 11,668.05 and 2,515.32 is: 3,772.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,779.85 : 11,668.05 = 2,515.32 : x
  2. Step 2: Convert to fraction form
    7,779.85/11,668.05 = 2,515.32/x
  3. Step 3: Cross multiply
    7,779.85x = 11,668.05 × 2,515.32
  4. Step 4: Simplify right side
    7,779.85x = 29,348,879.53
  5. Step 5: Solve for x
    x = 29,348,879.53/7,779.85
  6. Step 6: Final answer
    x = 3,772.42

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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.