Home / 2,981.84-4,475.12-2,106.08

Finding the Fourth Proportional to 2,981.84, 4,475.12 and 2,106.08

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Solution

The fourth proportional to 2,981.84, 4,475.12 and 2,106.08 is: 3,160.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981.84 : 4,475.12 = 2,106.08 : x
  2. Step 2: Convert to fraction form
    2,981.84/4,475.12 = 2,106.08/x
  3. Step 3: Cross multiply
    2,981.84x = 4,475.12 × 2,106.08
  4. Step 4: Simplify right side
    2,981.84x = 9,424,960.73
  5. Step 5: Solve for x
    x = 9,424,960.73/2,981.84
  6. Step 6: Final answer
    x = 3,160.79

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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.