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Finding the Fourth Proportional to 2,007.84, 2,998.40 and 1,986.12

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Solution

The fourth proportional to 2,007.84, 2,998.40 and 1,986.12 is: 2,965.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,007.84 : 2,998.40 = 1,986.12 : x
  2. Step 2: Convert to fraction form
    2,007.84/2,998.40 = 1,986.12/x
  3. Step 3: Cross multiply
    2,007.84x = 2,998.40 × 1,986.12
  4. Step 4: Simplify right side
    2,007.84x = 5,955,182.21
  5. Step 5: Solve for x
    x = 5,955,182.21/2,007.84
  6. Step 6: Final answer
    x = 2,965.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.