Home / 2,160.71-3,243.32-1,915.48

Finding the Fourth Proportional to 2,160.71, 3,243.32 and 1,915.48

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Solution

The fourth proportional to 2,160.71, 3,243.32 and 1,915.48 is: 2,875.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,160.71 : 3,243.32 = 1,915.48 : x
  2. Step 2: Convert to fraction form
    2,160.71/3,243.32 = 1,915.48/x
  3. Step 3: Cross multiply
    2,160.71x = 3,243.32 × 1,915.48
  4. Step 4: Simplify right side
    2,160.71x = 6,212,510.87
  5. Step 5: Solve for x
    x = 6,212,510.87/2,160.71
  6. Step 6: Final answer
    x = 2,875.22

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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.