Home / 7,977.20-11,965.38-2,430.41

Finding the Fourth Proportional to 7,977.20, 11,965.38 and 2,430.41

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Solution

The fourth proportional to 7,977.20, 11,965.38 and 2,430.41 is: 3,645.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,977.20 : 11,965.38 = 2,430.41 : x
  2. Step 2: Convert to fraction form
    7,977.20/11,965.38 = 2,430.41/x
  3. Step 3: Cross multiply
    7,977.20x = 11,965.38 × 2,430.41
  4. Step 4: Simplify right side
    7,977.20x = 29,080,779.21
  5. Step 5: Solve for x
    x = 29,080,779.21/7,977.20
  6. Step 6: Final answer
    x = 3,645.49

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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.