Home / 3,214.05-4,820.87-1,981.64

Finding the Fourth Proportional to 3,214.05, 4,820.87 and 1,981.64

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Solution

The fourth proportional to 3,214.05, 4,820.87 and 1,981.64 is: 2,972.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,214.05 : 4,820.87 = 1,981.64 : x
  2. Step 2: Convert to fraction form
    3,214.05/4,820.87 = 1,981.64/x
  3. Step 3: Cross multiply
    3,214.05x = 4,820.87 × 1,981.64
  4. Step 4: Simplify right side
    3,214.05x = 9,553,194.81
  5. Step 5: Solve for x
    x = 9,553,194.81/3,214.05
  6. Step 6: Final answer
    x = 2,972.32

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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.