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Finding the Fourth Proportional to 5,671.80, 8,507.70 and 5,262.20

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Solution

The fourth proportional to 5,671.80, 8,507.70 and 5,262.20 is: 7,893.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,671.80 : 8,507.70 = 5,262.20 : x
  2. Step 2: Convert to fraction form
    5,671.80/8,507.70 = 5,262.20/x
  3. Step 3: Cross multiply
    5,671.80x = 8,507.70 × 5,262.20
  4. Step 4: Simplify right side
    5,671.80x = 44,769,218.94
  5. Step 5: Solve for x
    x = 44,769,218.94/5,671.80
  6. Step 6: Final answer
    x = 7,893.30

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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.