Home / 7,621.76-11,435.34-2,690.12

Finding the Fourth Proportional to 7,621.76, 11,435.34 and 2,690.12

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Solution

The fourth proportional to 7,621.76, 11,435.34 and 2,690.12 is: 4,036.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,621.76 : 11,435.34 = 2,690.12 : x
  2. Step 2: Convert to fraction form
    7,621.76/11,435.34 = 2,690.12/x
  3. Step 3: Cross multiply
    7,621.76x = 11,435.34 × 2,690.12
  4. Step 4: Simplify right side
    7,621.76x = 30,762,436.84
  5. Step 5: Solve for x
    x = 30,762,436.84/7,621.76
  6. Step 6: Final answer
    x = 4,036.13

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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.