Home / 6,921.09-9,552.78-3,938.67

Finding the Fourth Proportional to 6,921.09, 9,552.78 and 3,938.67

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Solution

The fourth proportional to 6,921.09, 9,552.78 and 3,938.67 is: 5,436.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,921.09 : 9,552.78 = 3,938.67 : x
  2. Step 2: Convert to fraction form
    6,921.09/9,552.78 = 3,938.67/x
  3. Step 3: Cross multiply
    6,921.09x = 9,552.78 × 3,938.67
  4. Step 4: Simplify right side
    6,921.09x = 37,625,248.00
  5. Step 5: Solve for x
    x = 37,625,248.00/6,921.09
  6. Step 6: Final answer
    x = 5,436.32

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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.