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Finding the Fourth Proportional to 4,911.10, 7,311.11 and 4,881.90

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Solution

The fourth proportional to 4,911.10, 7,311.11 and 4,881.90 is: 7,267.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,911.10 : 7,311.11 = 4,881.90 : x
  2. Step 2: Convert to fraction form
    4,911.10/7,311.11 = 4,881.90/x
  3. Step 3: Cross multiply
    4,911.10x = 7,311.11 × 4,881.90
  4. Step 4: Simplify right side
    4,911.10x = 35,692,138.38
  5. Step 5: Solve for x
    x = 35,692,138.38/4,911.10
  6. Step 6: Final answer
    x = 7,267.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.