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Finding the Fourth Proportional to 5,311.30, 7,426.10 and 5,311.30

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Solution

The fourth proportional to 5,311.30, 7,426.10 and 5,311.30 is: 7,426.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,311.30 : 7,426.10 = 5,311.30 : x
  2. Step 2: Convert to fraction form
    5,311.30/7,426.10 = 5,311.30/x
  3. Step 3: Cross multiply
    5,311.30x = 7,426.10 × 5,311.30
  4. Step 4: Simplify right side
    5,311.30x = 39,442,244.93
  5. Step 5: Solve for x
    x = 39,442,244.93/5,311.30
  6. Step 6: Final answer
    x = 7,426.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.