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Finding the Fourth Proportional to 6,327.60, 9,491.40 and 5,647.20

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Solution

The fourth proportional to 6,327.60, 9,491.40 and 5,647.20 is: 8,470.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,327.60 : 9,491.40 = 5,647.20 : x
  2. Step 2: Convert to fraction form
    6,327.60/9,491.40 = 5,647.20/x
  3. Step 3: Cross multiply
    6,327.60x = 9,491.40 × 5,647.20
  4. Step 4: Simplify right side
    6,327.60x = 53,599,834.08
  5. Step 5: Solve for x
    x = 53,599,834.08/6,327.60
  6. Step 6: Final answer
    x = 8,470.80

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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.