Home / 4,187.20-5,779.92-2,615.68

Finding the Fourth Proportional to 4,187.20, 5,779.92 and 2,615.68

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Solution

The fourth proportional to 4,187.20, 5,779.92 and 2,615.68 is: 3,610.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,187.20 : 5,779.92 = 2,615.68 : x
  2. Step 2: Convert to fraction form
    4,187.20/5,779.92 = 2,615.68/x
  3. Step 3: Cross multiply
    4,187.20x = 5,779.92 × 2,615.68
  4. Step 4: Simplify right side
    4,187.20x = 15,118,421.15
  5. Step 5: Solve for x
    x = 15,118,421.15/4,187.20
  6. Step 6: Final answer
    x = 3,610.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.