Home / 1,721.70-2,580.95-625.82

Finding the Fourth Proportional to 1,721.70, 2,580.95 and 625.82

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Solution

The fourth proportional to 1,721.70, 2,580.95 and 625.82 is: 938.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721.70 : 2,580.95 = 625.82 : x
  2. Step 2: Convert to fraction form
    1,721.70/2,580.95 = 625.82/x
  3. Step 3: Cross multiply
    1,721.70x = 2,580.95 × 625.82
  4. Step 4: Simplify right side
    1,721.70x = 1,615,198.79
  5. Step 5: Solve for x
    x = 1,615,198.79/1,721.70
  6. Step 6: Final answer
    x = 938.14

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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.