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Finding the Fourth Proportional to 5,551.40, 8,310.90 and 5,259.80

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Solution

The fourth proportional to 5,551.40, 8,310.90 and 5,259.80 is: 7,874.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,551.40 : 8,310.90 = 5,259.80 : x
  2. Step 2: Convert to fraction form
    5,551.40/8,310.90 = 5,259.80/x
  3. Step 3: Cross multiply
    5,551.40x = 8,310.90 × 5,259.80
  4. Step 4: Simplify right side
    5,551.40x = 43,713,671.82
  5. Step 5: Solve for x
    x = 43,713,671.82/5,551.40
  6. Step 6: Final answer
    x = 7,874.35

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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.