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Finding the Fourth Proportional to 7,293.40, 10,940.10 and 5,422.30

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Solution

The fourth proportional to 7,293.40, 10,940.10 and 5,422.30 is: 8,133.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,293.40 : 10,940.10 = 5,422.30 : x
  2. Step 2: Convert to fraction form
    7,293.40/10,940.10 = 5,422.30/x
  3. Step 3: Cross multiply
    7,293.40x = 10,940.10 × 5,422.30
  4. Step 4: Simplify right side
    7,293.40x = 59,320,504.23
  5. Step 5: Solve for x
    x = 59,320,504.23/7,293.40
  6. Step 6: Final answer
    x = 8,133.45

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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.