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Finding the Fourth Proportional to 5,482.60, 8,223.90 and 3,171.40

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Solution

The fourth proportional to 5,482.60, 8,223.90 and 3,171.40 is: 4,757.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,482.60 : 8,223.90 = 3,171.40 : x
  2. Step 2: Convert to fraction form
    5,482.60/8,223.90 = 3,171.40/x
  3. Step 3: Cross multiply
    5,482.60x = 8,223.90 × 3,171.40
  4. Step 4: Simplify right side
    5,482.60x = 26,081,276.46
  5. Step 5: Solve for x
    x = 26,081,276.46/5,482.60
  6. Step 6: Final answer
    x = 4,757.10

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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.