Home / 6,721.09-10,080.28-6,387.66

Finding the Fourth Proportional to 6,721.09, 10,080.28 and 6,387.66

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Solution

The fourth proportional to 6,721.09, 10,080.28 and 6,387.66 is: 9,580.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,721.09 : 10,080.28 = 6,387.66 : x
  2. Step 2: Convert to fraction form
    6,721.09/10,080.28 = 6,387.66/x
  3. Step 3: Cross multiply
    6,721.09x = 10,080.28 × 6,387.66
  4. Step 4: Simplify right side
    6,721.09x = 64,389,409.33
  5. Step 5: Solve for x
    x = 64,389,409.33/6,721.09
  6. Step 6: Final answer
    x = 9,580.21

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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.