Home / 9,115.55-13,679.40-4,182.65

Finding the Fourth Proportional to 9,115.55, 13,679.40 and 4,182.65

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Solution

The fourth proportional to 9,115.55, 13,679.40 and 4,182.65 is: 6,276.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,115.55 : 13,679.40 = 4,182.65 : x
  2. Step 2: Convert to fraction form
    9,115.55/13,679.40 = 4,182.65/x
  3. Step 3: Cross multiply
    9,115.55x = 13,679.40 × 4,182.65
  4. Step 4: Simplify right side
    9,115.55x = 57,216,142.41
  5. Step 5: Solve for x
    x = 57,216,142.41/9,115.55
  6. Step 6: Final answer
    x = 6,276.76

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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.