Home / 7,954.20-11,931.30-6,114.60

Finding the Fourth Proportional to 7,954.20, 11,931.30 and 6,114.60

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Solution

The fourth proportional to 7,954.20, 11,931.30 and 6,114.60 is: 9,171.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,954.20 : 11,931.30 = 6,114.60 : x
  2. Step 2: Convert to fraction form
    7,954.20/11,931.30 = 6,114.60/x
  3. Step 3: Cross multiply
    7,954.20x = 11,931.30 × 6,114.60
  4. Step 4: Simplify right side
    7,954.20x = 72,955,126.98
  5. Step 5: Solve for x
    x = 72,955,126.98/7,954.20
  6. Step 6: Final answer
    x = 9,171.90

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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.