Home / 7,742.19-11,613.44-2,478.21

Finding the Fourth Proportional to 7,742.19, 11,613.44 and 2,478.21

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Solution

The fourth proportional to 7,742.19, 11,613.44 and 2,478.21 is: 3,717.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,742.19 : 11,613.44 = 2,478.21 : x
  2. Step 2: Convert to fraction form
    7,742.19/11,613.44 = 2,478.21/x
  3. Step 3: Cross multiply
    7,742.19x = 11,613.44 × 2,478.21
  4. Step 4: Simplify right side
    7,742.19x = 28,780,485.08
  5. Step 5: Solve for x
    x = 28,780,485.08/7,742.19
  6. Step 6: Final answer
    x = 3,717.36

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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.