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Finding the Fourth Proportional to 1,340.88, 1,853.60 and 1,328.44

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Solution

The fourth proportional to 1,340.88, 1,853.60 and 1,328.44 is: 1,836.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,340.88 : 1,853.60 = 1,328.44 : x
  2. Step 2: Convert to fraction form
    1,340.88/1,853.60 = 1,328.44/x
  3. Step 3: Cross multiply
    1,340.88x = 1,853.60 × 1,328.44
  4. Step 4: Simplify right side
    1,340.88x = 2,462,396.38
  5. Step 5: Solve for x
    x = 2,462,396.38/1,340.88
  6. Step 6: Final answer
    x = 1,836.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.