Home / 5,382.76-7,428.60-3,287.28

Finding the Fourth Proportional to 5,382.76, 7,428.60 and 3,287.28

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Solution

The fourth proportional to 5,382.76, 7,428.60 and 3,287.28 is: 4,536.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,382.76 : 7,428.60 = 3,287.28 : x
  2. Step 2: Convert to fraction form
    5,382.76/7,428.60 = 3,287.28/x
  3. Step 3: Cross multiply
    5,382.76x = 7,428.60 × 3,287.28
  4. Step 4: Simplify right side
    5,382.76x = 24,419,888.21
  5. Step 5: Solve for x
    x = 24,419,888.21/5,382.76
  6. Step 6: Final answer
    x = 4,536.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.