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Finding the Fourth Proportional to 6,253.60, 9,379.20 and 1,871.20

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Solution

The fourth proportional to 6,253.60, 9,379.20 and 1,871.20 is: 2,806.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,253.60 : 9,379.20 = 1,871.20 : x
  2. Step 2: Convert to fraction form
    6,253.60/9,379.20 = 1,871.20/x
  3. Step 3: Cross multiply
    6,253.60x = 9,379.20 × 1,871.20
  4. Step 4: Simplify right side
    6,253.60x = 17,550,359.04
  5. Step 5: Solve for x
    x = 17,550,359.04/6,253.60
  6. Step 6: Final answer
    x = 2,806.44

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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.