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Finding the Fourth Proportional to 2,098.06, 3,147.26 and 711.40

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Solution

The fourth proportional to 2,098.06, 3,147.26 and 711.40 is: 1,067.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,098.06 : 3,147.26 = 711.40 : x
  2. Step 2: Convert to fraction form
    2,098.06/3,147.26 = 711.40/x
  3. Step 3: Cross multiply
    2,098.06x = 3,147.26 × 711.40
  4. Step 4: Simplify right side
    2,098.06x = 2,238,960.76
  5. Step 5: Solve for x
    x = 2,238,960.76/2,098.06
  6. Step 6: Final answer
    x = 1,067.16

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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.