Home / 7,474.47-11,207.81-2,790.62

Finding the Fourth Proportional to 7,474.47, 11,207.81 and 2,790.62

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Solution

The fourth proportional to 7,474.47, 11,207.81 and 2,790.62 is: 4,184.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,474.47 : 11,207.81 = 2,790.62 : x
  2. Step 2: Convert to fraction form
    7,474.47/11,207.81 = 2,790.62/x
  3. Step 3: Cross multiply
    7,474.47x = 11,207.81 × 2,790.62
  4. Step 4: Simplify right side
    7,474.47x = 31,276,752.81
  5. Step 5: Solve for x
    x = 31,276,752.81/7,474.47
  6. Step 6: Final answer
    x = 4,184.48

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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.