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Finding the Fourth Proportional to 3,323.84, 4,990.36 and 1,863.92

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Solution

The fourth proportional to 3,323.84, 4,990.36 and 1,863.92 is: 2,798.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,323.84 : 4,990.36 = 1,863.92 : x
  2. Step 2: Convert to fraction form
    3,323.84/4,990.36 = 1,863.92/x
  3. Step 3: Cross multiply
    3,323.84x = 4,990.36 × 1,863.92
  4. Step 4: Simplify right side
    3,323.84x = 9,301,631.81
  5. Step 5: Solve for x
    x = 9,301,631.81/3,323.84
  6. Step 6: Final answer
    x = 2,798.46

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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.