Home / 1,721.09-2,581.63-625.45

Finding the Fourth Proportional to 1,721.09, 2,581.63 and 625.45

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Solution

The fourth proportional to 1,721.09, 2,581.63 and 625.45 is: 938.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721.09 : 2,581.63 = 625.45 : x
  2. Step 2: Convert to fraction form
    1,721.09/2,581.63 = 625.45/x
  3. Step 3: Cross multiply
    1,721.09x = 2,581.63 × 625.45
  4. Step 4: Simplify right side
    1,721.09x = 1,614,680.48
  5. Step 5: Solve for x
    x = 1,614,680.48/1,721.09
  6. Step 6: Final answer
    x = 938.17

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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.