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Finding the Fourth Proportional to 1,712.81, 2,568.31 and 889.07

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Solution

The fourth proportional to 1,712.81, 2,568.31 and 889.07 is: 1,333.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,712.81 : 2,568.31 = 889.07 : x
  2. Step 2: Convert to fraction form
    1,712.81/2,568.31 = 889.07/x
  3. Step 3: Cross multiply
    1,712.81x = 2,568.31 × 889.07
  4. Step 4: Simplify right side
    1,712.81x = 2,283,392.31
  5. Step 5: Solve for x
    x = 2,283,392.31/1,712.81
  6. Step 6: Final answer
    x = 1,333.13

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1.5x scale

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.