Home / 6,945.87-10,431.24-6,389.55

Finding the Fourth Proportional to 6,945.87, 10,431.24 and 6,389.55

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Solution

The fourth proportional to 6,945.87, 10,431.24 and 6,389.55 is: 9,595.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,945.87 : 10,431.24 = 6,389.55 : x
  2. Step 2: Convert to fraction form
    6,945.87/10,431.24 = 6,389.55/x
  3. Step 3: Cross multiply
    6,945.87x = 10,431.24 × 6,389.55
  4. Step 4: Simplify right side
    6,945.87x = 66,650,929.54
  5. Step 5: Solve for x
    x = 66,650,929.54/6,945.87
  6. Step 6: Final answer
    x = 9,595.76

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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.