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Finding the Fourth Proportional to 1,548.45, 2,137.05 and 958.91

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Solution

The fourth proportional to 1,548.45, 2,137.05 and 958.91 is: 1,323.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,548.45 : 2,137.05 = 958.91 : x
  2. Step 2: Convert to fraction form
    1,548.45/2,137.05 = 958.91/x
  3. Step 3: Cross multiply
    1,548.45x = 2,137.05 × 958.91
  4. Step 4: Simplify right side
    1,548.45x = 2,049,227.93
  5. Step 5: Solve for x
    x = 2,049,227.93/1,548.45
  6. Step 6: Final answer
    x = 1,323.41

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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.