Home / 1,721.56-2,376-1,022.80

Finding the Fourth Proportional to 1,721.56, 2,376 and 1,022.80

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Solution

The fourth proportional to 1,721.56, 2,376 and 1,022.80 is: 1,411.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721.56 : 2,376 = 1,022.80 : x
  2. Step 2: Convert to fraction form
    1,721.56/2,376 = 1,022.80/x
  3. Step 3: Cross multiply
    1,721.56x = 2,376 × 1,022.80
  4. Step 4: Simplify right side
    1,721.56x = 2,430,172.80
  5. Step 5: Solve for x
    x = 2,430,172.80/1,721.56
  6. Step 6: Final answer
    x = 1,411.61

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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.