Home / 1,411.16-2,115.23-794.70

Finding the Fourth Proportional to 1,411.16, 2,115.23 and 794.70

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Solution

The fourth proportional to 1,411.16, 2,115.23 and 794.70 is: 1,191.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,411.16 : 2,115.23 = 794.70 : x
  2. Step 2: Convert to fraction form
    1,411.16/2,115.23 = 794.70/x
  3. Step 3: Cross multiply
    1,411.16x = 2,115.23 × 794.70
  4. Step 4: Simplify right side
    1,411.16x = 1,680,969.31
  5. Step 5: Solve for x
    x = 1,680,969.31/1,411.16
  6. Step 6: Final answer
    x = 1,191.20

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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.