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Finding the Fourth Proportional to 2,097.66, 3,146.76 and 711.12

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Solution

The fourth proportional to 2,097.66, 3,146.76 and 711.12 is: 1,066.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,097.66 : 3,146.76 = 711.12 : x
  2. Step 2: Convert to fraction form
    2,097.66/3,146.76 = 711.12/x
  3. Step 3: Cross multiply
    2,097.66x = 3,146.76 × 711.12
  4. Step 4: Simplify right side
    2,097.66x = 2,237,723.97
  5. Step 5: Solve for x
    x = 2,237,723.97/2,097.66
  6. Step 6: Final answer
    x = 1,066.77

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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.