Home / 7,314.16-10,972.32-2,119.36

Finding the Fourth Proportional to 7,314.16, 10,972.32 and 2,119.36

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Solution

The fourth proportional to 7,314.16, 10,972.32 and 2,119.36 is: 3,179.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,314.16 : 10,972.32 = 2,119.36 : x
  2. Step 2: Convert to fraction form
    7,314.16/10,972.32 = 2,119.36/x
  3. Step 3: Cross multiply
    7,314.16x = 10,972.32 × 2,119.36
  4. Step 4: Simplify right side
    7,314.16x = 23,254,230.66
  5. Step 5: Solve for x
    x = 23,254,230.66/7,314.16
  6. Step 6: Final answer
    x = 3,179.35

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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.