Home / 1,568.22-2,159.21-1,331.68

Finding the Fourth Proportional to 1,568.22, 2,159.21 and 1,331.68

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Solution

The fourth proportional to 1,568.22, 2,159.21 and 1,331.68 is: 1,833.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,568.22 : 2,159.21 = 1,331.68 : x
  2. Step 2: Convert to fraction form
    1,568.22/2,159.21 = 1,331.68/x
  3. Step 3: Cross multiply
    1,568.22x = 2,159.21 × 1,331.68
  4. Step 4: Simplify right side
    1,568.22x = 2,875,374.70
  5. Step 5: Solve for x
    x = 2,875,374.70/1,568.22
  6. Step 6: Final answer
    x = 1,833.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.