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Finding the Fourth Proportional to 5,311.85, 8,017.70 and 5,311.85

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Solution

The fourth proportional to 5,311.85, 8,017.70 and 5,311.85 is: 8,017.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,311.85 : 8,017.70 = 5,311.85 : x
  2. Step 2: Convert to fraction form
    5,311.85/8,017.70 = 5,311.85/x
  3. Step 3: Cross multiply
    5,311.85x = 8,017.70 × 5,311.85
  4. Step 4: Simplify right side
    5,311.85x = 42,588,753.10
  5. Step 5: Solve for x
    x = 42,588,753.10/5,311.85
  6. Step 6: Final answer
    x = 8,017.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.