Home / 1,720.75-2,581.53-625.13

Finding the Fourth Proportional to 1,720.75, 2,581.53 and 625.13

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Solution

The fourth proportional to 1,720.75, 2,581.53 and 625.13 is: 937.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.75 : 2,581.53 = 625.13 : x
  2. Step 2: Convert to fraction form
    1,720.75/2,581.53 = 625.13/x
  3. Step 3: Cross multiply
    1,720.75x = 2,581.53 × 625.13
  4. Step 4: Simplify right side
    1,720.75x = 1,613,781.29
  5. Step 5: Solve for x
    x = 1,613,781.29/1,720.75
  6. Step 6: Final answer
    x = 937.84

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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.