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Finding the Fourth Proportional to 7,154.82, 10,730.59 and 1,961.10

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Solution

The fourth proportional to 7,154.82, 10,730.59 and 1,961.10 is: 2,941.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,154.82 : 10,730.59 = 1,961.10 : x
  2. Step 2: Convert to fraction form
    7,154.82/10,730.59 = 1,961.10/x
  3. Step 3: Cross multiply
    7,154.82x = 10,730.59 × 1,961.10
  4. Step 4: Simplify right side
    7,154.82x = 21,043,760.05
  5. Step 5: Solve for x
    x = 21,043,760.05/7,154.82
  6. Step 6: Final answer
    x = 2,941.20

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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.