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Finding the Fourth Proportional to 3,612.79, 4,983.78 and 2,119.71

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Solution

The fourth proportional to 3,612.79, 4,983.78 and 2,119.71 is: 2,924.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.79 : 4,983.78 = 2,119.71 : x
  2. Step 2: Convert to fraction form
    3,612.79/4,983.78 = 2,119.71/x
  3. Step 3: Cross multiply
    3,612.79x = 4,983.78 × 2,119.71
  4. Step 4: Simplify right side
    3,612.79x = 10,564,168.30
  5. Step 5: Solve for x
    x = 10,564,168.30/3,612.79
  6. Step 6: Final answer
    x = 2,924.10

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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.