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Finding the Fourth Proportional to 1,966.42, 2,710.39 and 1,686.97

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Solution

The fourth proportional to 1,966.42, 2,710.39 and 1,686.97 is: 2,325.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,966.42 : 2,710.39 = 1,686.97 : x
  2. Step 2: Convert to fraction form
    1,966.42/2,710.39 = 1,686.97/x
  3. Step 3: Cross multiply
    1,966.42x = 2,710.39 × 1,686.97
  4. Step 4: Simplify right side
    1,966.42x = 4,572,349.18
  5. Step 5: Solve for x
    x = 4,572,349.18/1,966.42
  6. Step 6: Final answer
    x = 2,325.21

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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.