Home / 7,943.54-11,920.64-3,561.30

Finding the Fourth Proportional to 7,943.54, 11,920.64 and 3,561.30

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Solution

The fourth proportional to 7,943.54, 11,920.64 and 3,561.30 is: 5,344.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,943.54 : 11,920.64 = 3,561.30 : x
  2. Step 2: Convert to fraction form
    7,943.54/11,920.64 = 3,561.30/x
  3. Step 3: Cross multiply
    7,943.54x = 11,920.64 × 3,561.30
  4. Step 4: Simplify right side
    7,943.54x = 42,452,957.43
  5. Step 5: Solve for x
    x = 42,452,957.43/7,943.54
  6. Step 6: Final answer
    x = 5,344.34

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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.