Home / 7,740.21-11,613.56-7,127.49

Finding the Fourth Proportional to 7,740.21, 11,613.56 and 7,127.49

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Solution

The fourth proportional to 7,740.21, 11,613.56 and 7,127.49 is: 10,694.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,740.21 : 11,613.56 = 7,127.49 : x
  2. Step 2: Convert to fraction form
    7,740.21/11,613.56 = 7,127.49/x
  3. Step 3: Cross multiply
    7,740.21x = 11,613.56 × 7,127.49
  4. Step 4: Simplify right side
    7,740.21x = 82,775,497.13
  5. Step 5: Solve for x
    x = 82,775,497.13/7,740.21
  6. Step 6: Final answer
    x = 10,694.22

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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.