Home / 1,712.48-2,568.76-788.81

Finding the Fourth Proportional to 1,712.48, 2,568.76 and 788.81

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Solution

The fourth proportional to 1,712.48, 2,568.76 and 788.81 is: 1,183.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,712.48 : 2,568.76 = 788.81 : x
  2. Step 2: Convert to fraction form
    1,712.48/2,568.76 = 788.81/x
  3. Step 3: Cross multiply
    1,712.48x = 2,568.76 × 788.81
  4. Step 4: Simplify right side
    1,712.48x = 2,026,263.58
  5. Step 5: Solve for x
    x = 2,026,263.58/1,712.48
  6. Step 6: Final answer
    x = 1,183.23

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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.