Home / 9,379.08-12,942.48-5,187

Finding the Fourth Proportional to 9,379.08, 12,942.48 and 5,187

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Solution

The fourth proportional to 9,379.08, 12,942.48 and 5,187 is: 7,157.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,379.08 : 12,942.48 = 5,187 : x
  2. Step 2: Convert to fraction form
    9,379.08/12,942.48 = 5,187/x
  3. Step 3: Cross multiply
    9,379.08x = 12,942.48 × 5,187
  4. Step 4: Simplify right side
    9,379.08x = 67,132,643.76
  5. Step 5: Solve for x
    x = 67,132,643.76/9,379.08
  6. Step 6: Final answer
    x = 7,157.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.