Home / 7,742.13-11,613.20-2,811.76

Finding the Fourth Proportional to 7,742.13, 11,613.20 and 2,811.76

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Solution

The fourth proportional to 7,742.13, 11,613.20 and 2,811.76 is: 4,217.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,742.13 : 11,613.20 = 2,811.76 : x
  2. Step 2: Convert to fraction form
    7,742.13/11,613.20 = 2,811.76/x
  3. Step 3: Cross multiply
    7,742.13x = 11,613.20 × 2,811.76
  4. Step 4: Simplify right side
    7,742.13x = 32,653,531.23
  5. Step 5: Solve for x
    x = 32,653,531.23/7,742.13
  6. Step 6: Final answer
    x = 4,217.64

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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.