Home / 6,921.36-10,387.56-3,025.20

Finding the Fourth Proportional to 6,921.36, 10,387.56 and 3,025.20

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Solution

The fourth proportional to 6,921.36, 10,387.56 and 3,025.20 is: 4,540.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,921.36 : 10,387.56 = 3,025.20 : x
  2. Step 2: Convert to fraction form
    6,921.36/10,387.56 = 3,025.20/x
  3. Step 3: Cross multiply
    6,921.36x = 10,387.56 × 3,025.20
  4. Step 4: Simplify right side
    6,921.36x = 31,424,446.51
  5. Step 5: Solve for x
    x = 31,424,446.51/6,921.36
  6. Step 6: Final answer
    x = 4,540.21

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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.