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Finding the Fourth Proportional to 7,274.70, 10,913.60 and 4,156.20

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Solution

The fourth proportional to 7,274.70, 10,913.60 and 4,156.20 is: 6,235.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,274.70 : 10,913.60 = 4,156.20 : x
  2. Step 2: Convert to fraction form
    7,274.70/10,913.60 = 4,156.20/x
  3. Step 3: Cross multiply
    7,274.70x = 10,913.60 × 4,156.20
  4. Step 4: Simplify right side
    7,274.70x = 45,359,104.32
  5. Step 5: Solve for x
    x = 45,359,104.32/7,274.70
  6. Step 6: Final answer
    x = 6,235.19

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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.