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Finding the Fourth Proportional to 1,341.30, 2,007.90 and 1,179.30

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Solution

The fourth proportional to 1,341.30, 2,007.90 and 1,179.30 is: 1,765.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,341.30 : 2,007.90 = 1,179.30 : x
  2. Step 2: Convert to fraction form
    1,341.30/2,007.90 = 1,179.30/x
  3. Step 3: Cross multiply
    1,341.30x = 2,007.90 × 1,179.30
  4. Step 4: Simplify right side
    1,341.30x = 2,367,916.47
  5. Step 5: Solve for x
    x = 2,367,916.47/1,341.30
  6. Step 6: Final answer
    x = 1,765.39

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1.5x scale

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.