Home / 6,765.09-10,127.79-5,128.08

Finding the Fourth Proportional to 6,765.09, 10,127.79 and 5,128.08

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Solution

The fourth proportional to 6,765.09, 10,127.79 and 5,128.08 is: 7,677.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,765.09 : 10,127.79 = 5,128.08 : x
  2. Step 2: Convert to fraction form
    6,765.09/10,127.79 = 5,128.08/x
  3. Step 3: Cross multiply
    6,765.09x = 10,127.79 × 5,128.08
  4. Step 4: Simplify right side
    6,765.09x = 51,936,117.34
  5. Step 5: Solve for x
    x = 51,936,117.34/6,765.09
  6. Step 6: Final answer
    x = 7,677.08

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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.