Home / 1,712.24-2,568.35-890.29

Finding the Fourth Proportional to 1,712.24, 2,568.35 and 890.29

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Solution

The fourth proportional to 1,712.24, 2,568.35 and 890.29 is: 1,335.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,712.24 : 2,568.35 = 890.29 : x
  2. Step 2: Convert to fraction form
    1,712.24/2,568.35 = 890.29/x
  3. Step 3: Cross multiply
    1,712.24x = 2,568.35 × 890.29
  4. Step 4: Simplify right side
    1,712.24x = 2,286,576.32
  5. Step 5: Solve for x
    x = 2,286,576.32/1,712.24
  6. Step 6: Final answer
    x = 1,335.43

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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.