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Finding the Fourth Proportional to 2,141.88, 2,954.28 and 1,356.44

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Solution

The fourth proportional to 2,141.88, 2,954.28 and 1,356.44 is: 1,870.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,141.88 : 2,954.28 = 1,356.44 : x
  2. Step 2: Convert to fraction form
    2,141.88/2,954.28 = 1,356.44/x
  3. Step 3: Cross multiply
    2,141.88x = 2,954.28 × 1,356.44
  4. Step 4: Simplify right side
    2,141.88x = 4,007,303.56
  5. Step 5: Solve for x
    x = 4,007,303.56/2,141.88
  6. Step 6: Final answer
    x = 1,870.93

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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.