Home / 2,121.26-2,927.47-1,411.88

Finding the Fourth Proportional to 2,121.26, 2,927.47 and 1,411.88

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Solution

The fourth proportional to 2,121.26, 2,927.47 and 1,411.88 is: 1,948.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.26 : 2,927.47 = 1,411.88 : x
  2. Step 2: Convert to fraction form
    2,121.26/2,927.47 = 1,411.88/x
  3. Step 3: Cross multiply
    2,121.26x = 2,927.47 × 1,411.88
  4. Step 4: Simplify right side
    2,121.26x = 4,133,236.34
  5. Step 5: Solve for x
    x = 4,133,236.34/2,121.26
  6. Step 6: Final answer
    x = 1,948.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.