Home / 7,015.44-9,680.79-4,031.28

Finding the Fourth Proportional to 7,015.44, 9,680.79 and 4,031.28

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Solution

The fourth proportional to 7,015.44, 9,680.79 and 4,031.28 is: 5,562.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,015.44 : 9,680.79 = 4,031.28 : x
  2. Step 2: Convert to fraction form
    7,015.44/9,680.79 = 4,031.28/x
  3. Step 3: Cross multiply
    7,015.44x = 9,680.79 × 4,031.28
  4. Step 4: Simplify right side
    7,015.44x = 39,025,975.11
  5. Step 5: Solve for x
    x = 39,025,975.11/7,015.44
  6. Step 6: Final answer
    x = 5,562.87

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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.