Home / 7,219.80-10,830.27-2,779.62

Finding the Fourth Proportional to 7,219.80, 10,830.27 and 2,779.62

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Solution

The fourth proportional to 7,219.80, 10,830.27 and 2,779.62 is: 4,169.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,219.80 : 10,830.27 = 2,779.62 : x
  2. Step 2: Convert to fraction form
    7,219.80/10,830.27 = 2,779.62/x
  3. Step 3: Cross multiply
    7,219.80x = 10,830.27 × 2,779.62
  4. Step 4: Simplify right side
    7,219.80x = 30,104,004.91
  5. Step 5: Solve for x
    x = 30,104,004.91/7,219.80
  6. Step 6: Final answer
    x = 4,169.65

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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.