Home / 9,115.30-13,679.03-4,182.40

Finding the Fourth Proportional to 9,115.30, 13,679.03 and 4,182.40

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Solution

The fourth proportional to 9,115.30, 13,679.03 and 4,182.40 is: 6,276.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,115.30 : 13,679.03 = 4,182.40 : x
  2. Step 2: Convert to fraction form
    9,115.30/13,679.03 = 4,182.40/x
  3. Step 3: Cross multiply
    9,115.30x = 13,679.03 × 4,182.40
  4. Step 4: Simplify right side
    9,115.30x = 57,211,154.16
  5. Step 5: Solve for x
    x = 57,211,154.16/9,115.30
  6. Step 6: Final answer
    x = 6,276.39

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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.