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Finding the Fourth Proportional to 2,340.80, 3,511.20 and 880.07

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Solution

The fourth proportional to 2,340.80, 3,511.20 and 880.07 is: 1,320.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,340.80 : 3,511.20 = 880.07 : x
  2. Step 2: Convert to fraction form
    2,340.80/3,511.20 = 880.07/x
  3. Step 3: Cross multiply
    2,340.80x = 3,511.20 × 880.07
  4. Step 4: Simplify right side
    2,340.80x = 3,090,082.58
  5. Step 5: Solve for x
    x = 3,090,082.58/2,340.80
  6. Step 6: Final answer
    x = 1,320.10

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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.