Home / 3,205.17-4,423.21-1,878.39

Finding the Fourth Proportional to 3,205.17, 4,423.21 and 1,878.39

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Solution

The fourth proportional to 3,205.17, 4,423.21 and 1,878.39 is: 2,592.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,205.17 : 4,423.21 = 1,878.39 : x
  2. Step 2: Convert to fraction form
    3,205.17/4,423.21 = 1,878.39/x
  3. Step 3: Cross multiply
    3,205.17x = 4,423.21 × 1,878.39
  4. Step 4: Simplify right side
    3,205.17x = 8,308,508.74
  5. Step 5: Solve for x
    x = 8,308,508.74/3,205.17
  6. Step 6: Final answer
    x = 2,592.22

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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.