Home / 7,975.10-11,962.92-2,639.36

Finding the Fourth Proportional to 7,975.10, 11,962.92 and 2,639.36

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Solution

The fourth proportional to 7,975.10, 11,962.92 and 2,639.36 is: 3,959.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,975.10 : 11,962.92 = 2,639.36 : x
  2. Step 2: Convert to fraction form
    7,975.10/11,962.92 = 2,639.36/x
  3. Step 3: Cross multiply
    7,975.10x = 11,962.92 × 2,639.36
  4. Step 4: Simplify right side
    7,975.10x = 31,574,452.53
  5. Step 5: Solve for x
    x = 31,574,452.53/7,975.10
  6. Step 6: Final answer
    x = 3,959.13

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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.