Home / 1,379.21-2,068.84-1,088.29

Finding the Fourth Proportional to 1,379.21, 2,068.84 and 1,088.29

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Solution

The fourth proportional to 1,379.21, 2,068.84 and 1,088.29 is: 1,632.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,379.21 : 2,068.84 = 1,088.29 : x
  2. Step 2: Convert to fraction form
    1,379.21/2,068.84 = 1,088.29/x
  3. Step 3: Cross multiply
    1,379.21x = 2,068.84 × 1,088.29
  4. Step 4: Simplify right side
    1,379.21x = 2,251,497.88
  5. Step 5: Solve for x
    x = 2,251,497.88/1,379.21
  6. Step 6: Final answer
    x = 1,632.45

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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.