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Finding the Fourth Proportional to 5,647.59, 8,470.77 and 1,949.40

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Solution

The fourth proportional to 5,647.59, 8,470.77 and 1,949.40 is: 2,923.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,647.59 : 8,470.77 = 1,949.40 : x
  2. Step 2: Convert to fraction form
    5,647.59/8,470.77 = 1,949.40/x
  3. Step 3: Cross multiply
    5,647.59x = 8,470.77 × 1,949.40
  4. Step 4: Simplify right side
    5,647.59x = 16,512,919.04
  5. Step 5: Solve for x
    x = 16,512,919.04/5,647.59
  6. Step 6: Final answer
    x = 2,923.89

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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.