Home / 3,880.83-5,355.65-2,389.62

Finding the Fourth Proportional to 3,880.83, 5,355.65 and 2,389.62

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Solution

The fourth proportional to 3,880.83, 5,355.65 and 2,389.62 is: 3,297.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,880.83 : 5,355.65 = 2,389.62 : x
  2. Step 2: Convert to fraction form
    3,880.83/5,355.65 = 2,389.62/x
  3. Step 3: Cross multiply
    3,880.83x = 5,355.65 × 2,389.62
  4. Step 4: Simplify right side
    3,880.83x = 12,797,968.35
  5. Step 5: Solve for x
    x = 12,797,968.35/3,880.83
  6. Step 6: Final answer
    x = 3,297.74

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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.