Home / 6,171.20-9,257.28-1,788.72

Finding the Fourth Proportional to 6,171.20, 9,257.28 and 1,788.72

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Solution

The fourth proportional to 6,171.20, 9,257.28 and 1,788.72 is: 2,683.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,171.20 : 9,257.28 = 1,788.72 : x
  2. Step 2: Convert to fraction form
    6,171.20/9,257.28 = 1,788.72/x
  3. Step 3: Cross multiply
    6,171.20x = 9,257.28 × 1,788.72
  4. Step 4: Simplify right side
    6,171.20x = 16,558,681.88
  5. Step 5: Solve for x
    x = 16,558,681.88/6,171.20
  6. Step 6: Final answer
    x = 2,683.22

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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.