Home / 8,790.72-13,187.44-2,945.96

Finding the Fourth Proportional to 8,790.72, 13,187.44 and 2,945.96

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Solution

The fourth proportional to 8,790.72, 13,187.44 and 2,945.96 is: 4,419.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,790.72 : 13,187.44 = 2,945.96 : x
  2. Step 2: Convert to fraction form
    8,790.72/13,187.44 = 2,945.96/x
  3. Step 3: Cross multiply
    8,790.72x = 13,187.44 × 2,945.96
  4. Step 4: Simplify right side
    8,790.72x = 38,849,670.74
  5. Step 5: Solve for x
    x = 38,849,670.74/8,790.72
  6. Step 6: Final answer
    x = 4,419.40

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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.