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Finding the Fourth Proportional to 7,456.40, 11,168.40 and 4,540.40

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Solution

The fourth proportional to 7,456.40, 11,168.40 and 4,540.40 is: 6,800.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,456.40 : 11,168.40 = 4,540.40 : x
  2. Step 2: Convert to fraction form
    7,456.40/11,168.40 = 4,540.40/x
  3. Step 3: Cross multiply
    7,456.40x = 11,168.40 × 4,540.40
  4. Step 4: Simplify right side
    7,456.40x = 50,709,003.36
  5. Step 5: Solve for x
    x = 50,709,003.36/7,456.40
  6. Step 6: Final answer
    x = 6,800.74

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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.