Home / 1,719.08-2,578.80-841.90

Finding the Fourth Proportional to 1,719.08, 2,578.80 and 841.90

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Solution

The fourth proportional to 1,719.08, 2,578.80 and 841.90 is: 1,262.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,719.08 : 2,578.80 = 841.90 : x
  2. Step 2: Convert to fraction form
    1,719.08/2,578.80 = 841.90/x
  3. Step 3: Cross multiply
    1,719.08x = 2,578.80 × 841.90
  4. Step 4: Simplify right side
    1,719.08x = 2,171,091.72
  5. Step 5: Solve for x
    x = 2,171,091.72/1,719.08
  6. Step 6: Final answer
    x = 1,262.94

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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.