Home / 1,721.23-2,581.80-625.62

Finding the Fourth Proportional to 1,721.23, 2,581.80 and 625.62

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Solution

The fourth proportional to 1,721.23, 2,581.80 and 625.62 is: 938.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721.23 : 2,581.80 = 625.62 : x
  2. Step 2: Convert to fraction form
    1,721.23/2,581.80 = 625.62/x
  3. Step 3: Cross multiply
    1,721.23x = 2,581.80 × 625.62
  4. Step 4: Simplify right side
    1,721.23x = 1,615,212.81
  5. Step 5: Solve for x
    x = 1,615,212.81/1,721.23
  6. Step 6: Final answer
    x = 938.41

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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.